approximately all of the propoerty crimes are between 3 standard deviations from the mean
mean,u = 3377.2
standard deviation,s = 847.4
u - 3s = 835
u + 3s = 5919.4
OPTION B
p(Z
Solution
approximately all of the propoerty crimes are between 3 standard deviations from the mean
mean,u = 3377.2
standard deviation,s = 847.4
u - 3s = 835
u + 3s = 5919.4
OPTION B
p(Z.
DMA stands for Direct memory access and is a method of transferring data from the computers RAM to another part of the computer without processing it using the CPU.
DMA stands for Direct memory access and is a method of transferring data from the computers RAM to another part of the computer without processing it using the CPU.
In many I/O interfacing applications and certainly in data acquisation system. it is often necessary to transfer data to or from an interface at data rates higher than those possible using simple programmed I/O loops
DMA Versus Polling or Interrupt Driven I/Osathish sak
Polling and Interrupt driven I/O concentrates on data transfer between the processor and I/O devices.
An instruction to transfer (mov datain,R0) only occurs after the processor determines that the I/O device is ready
Either by polling a status flag in the device interface or
Waits for the device to send an interrupt request.
Considerable overhead is incurred, because several program instructions must be executed for each data word transferred.
Instructions are needed to increment memory address and keeping track of work count.
With interrupts, additional overhead associated with saving and restoring the program counter and other state information.
discuss the drawbacks of programmed and interrupt driven io and des.pdfinfo998421
discuss the drawbacks of programmed and interrupt driven i/o and describe in general the
functionality of the DNA
Solution
Programmed I/O
Programmed I/O (PIO) refers to data transfers initiated by a CPU under driver software control
to access registers or memory on a device.
The CPU issues a command then waits for I/O operations to be complete. As the CPU is faster
than the I/O module, the problem with programmed I/O is that the CPU has to wait a long time
for the I/O module of concern to be ready for either reception or transmission of data. The CPU,
while waiting, must repeatedly check the status of the I/O module, and this process is known as
Polling. As a result, the level of the performance of the entire system is severely degraded.
Programmed I/O basically works in these ways:
Interrupt
The CPU issues commands to the I/O module then proceeds with its normal work until
interrupted by I/O device on completion of its work.
For input, the device interrupts the CPU when new data has arrived and is ready to be retrieved
by the system processor. The actual actions to perform depend on whether the device uses I/O
ports, memory mapping.
For output, the device delivers an interrupt either when it is ready to accept new data or to
acknowledge a successful data transfer. Memory-mapped and DMA-capable devices usually
generate interrupts to tell the system they are done with the buffer.
Although Interrupt relieves the CPU of having to wait for the devices, but it is still inefficient in
data transfer of large amount because the CPU has to transfer the data word by word between I/O
module and memory.
The main limitation of programmed I/O and interrupt driven I/O is given below:
Programmed I/O
Each instructions selects one I/O device (by number) and transfers a single character (byte)
Example: microprocessor controlled video terminal.
Four registers: input status and character, output status and character.
Interrupt-driven I/O
Primary disadvantage of programmed I/O is that CPU spends most of its time in a tight loop
waiting for the device to become ready. This is called busy waiting.
With interrupt-driven I/O, the CPU starts the device and tells it to generate an interrupt when it is
finished.
Done by setting interrupt-enable bit in status register.
Still requires an interrupt for every character read or written.
Interrupting a running process is an expensive business (requires saving context).
Requires extra hardware (DMA controller chip).
All these limitation can be overcome by the Introduction of DMA (Direct Memory Access)
To write block of 32 bytes from memory address 100 to device 4
1. CPU writes 32, 100, 4 into the first three DMA registers (memory address, count, device
number)
2. CPU puts code for WRITE (say 1) into fourth (direction) DMA register, which signals DMA
controller to begin operation
3. Controller reads (via bus request as CPU would) byte 100 from memory
4. Controller makes I/O request to write to device 4
5. Controller increments m.
Direct Memory Access (DMA)-Working and ImplementationShubham Kumar
DMA is an important functionality of any computing system involving transfer of data from/to an I/O device. In this presentation, a brief description has been provided regarding how the DMA functionality is implemented on a normal PC as well as on an Intel Quark SoC based small Embedded System.Different implementations of the DMA functionality depend on the Controller Hub present on the SouthBridge of the MotherBoard of the respective platform.For example->DMA implementation in Intel ICH7 is different from those in Intel ICH to Intel ICH6. In the slides, "Galileo" refers to the Intel Galileo Board containing Intel Quark SoC. Intel Galileo Board contains Designware DMA controllers." dmatest.c " is a memory-to-memory data transfer test driver implementing DMA. This module is loaded and then memcpy is checked using dmesg. Do take a look at the "External Links and References" given at the end of the PPT.
Name- Gold leaved white PoplarGenus- Populusspecies- albaAutho.pdfaptex1
In python,Tkinter is a Graphical user interface package.So,Tkinter tookit for GUI programming
supports protocol handler mechanism.
Protocol is taking care of how interaction takes place between application and windows manager.
self.parent.protocol(\"WM_DELETE_WINDOW\",self.quit_handler)
in the above line \"WM_DELETE_WINDOW\" is a protocol.What this protocl does is :it define
what is going to happen when a user who uses the application and closes window explicitely
using windows manager.
Then this protocol \"WM_DELETE_WINDOE\" bypasses to quit_handler().
That quit_handler() asks user \"whether he or she wants to quit or not\" then simply quit the
window.
Solution
In python,Tkinter is a Graphical user interface package.So,Tkinter tookit for GUI programming
supports protocol handler mechanism.
Protocol is taking care of how interaction takes place between application and windows manager.
self.parent.protocol(\"WM_DELETE_WINDOW\",self.quit_handler)
in the above line \"WM_DELETE_WINDOW\" is a protocol.What this protocl does is :it define
what is going to happen when a user who uses the application and closes window explicitely
using windows manager.
Then this protocol \"WM_DELETE_WINDOE\" bypasses to quit_handler().
That quit_handler() asks user \"whether he or she wants to quit or not\" then simply quit the
window..
MinOfFourNumbers.javaimport java.util.Scanner;public class MinOf.pdfaptex1
If I assume you meant supply is determined as [q_(s)=3p^2-4p] and demand is determined as
[q_(d)=-p^2+24] then I would calculate that the equilibrium is where [q_(s)=q_(d)] and p>0. So I
set up the equation [3p^2-4p=-p^2+24] I add [p^2] to both sides of the equation yielding [4p^2-
4p=24] I subtract 24 from each side, yielding the quadratic equation [4p^2-4p-24=0] I factor the
equation [(2p-6)(2p+4)=0] so that means [2p-6=0] or [2p+4=0] In the former case 2p=6 so p=3,
and in the latter 2p=-4 so p=-2. The economic nature of the question requires p>0, so [p!=-2] and
thus the equilibrium price is $3.00 each. Then to determine the equilibrium quantity, we solve
either q expression for p=3.
[q_(s)=3(3)^2-4(3)=3(9)-12=27-12=15]
[q_(d)=-(3^2)+24=-9+24=15]
So the equilibrium quantity is 15 items.
The price and quantity for market equilibrium is 15 items at $3.00 each.
Solution
If I assume you meant supply is determined as [q_(s)=3p^2-4p] and demand is determined as
[q_(d)=-p^2+24] then I would calculate that the equilibrium is where [q_(s)=q_(d)] and p>0. So I
set up the equation [3p^2-4p=-p^2+24] I add [p^2] to both sides of the equation yielding [4p^2-
4p=24] I subtract 24 from each side, yielding the quadratic equation [4p^2-4p-24=0] I factor the
equation [(2p-6)(2p+4)=0] so that means [2p-6=0] or [2p+4=0] In the former case 2p=6 so p=3,
and in the latter 2p=-4 so p=-2. The economic nature of the question requires p>0, so [p!=-2] and
thus the equilibrium price is $3.00 each. Then to determine the equilibrium quantity, we solve
either q expression for p=3.
[q_(s)=3(3)^2-4(3)=3(9)-12=27-12=15]
[q_(d)=-(3^2)+24=-9+24=15]
So the equilibrium quantity is 15 items.
The price and quantity for market equilibrium is 15 items at $3.00 each..
More Related Content
Similar to Direct memory access (DMA) is a function that allows an inputoutput.pdf
In many I/O interfacing applications and certainly in data acquisation system. it is often necessary to transfer data to or from an interface at data rates higher than those possible using simple programmed I/O loops
DMA Versus Polling or Interrupt Driven I/Osathish sak
Polling and Interrupt driven I/O concentrates on data transfer between the processor and I/O devices.
An instruction to transfer (mov datain,R0) only occurs after the processor determines that the I/O device is ready
Either by polling a status flag in the device interface or
Waits for the device to send an interrupt request.
Considerable overhead is incurred, because several program instructions must be executed for each data word transferred.
Instructions are needed to increment memory address and keeping track of work count.
With interrupts, additional overhead associated with saving and restoring the program counter and other state information.
discuss the drawbacks of programmed and interrupt driven io and des.pdfinfo998421
discuss the drawbacks of programmed and interrupt driven i/o and describe in general the
functionality of the DNA
Solution
Programmed I/O
Programmed I/O (PIO) refers to data transfers initiated by a CPU under driver software control
to access registers or memory on a device.
The CPU issues a command then waits for I/O operations to be complete. As the CPU is faster
than the I/O module, the problem with programmed I/O is that the CPU has to wait a long time
for the I/O module of concern to be ready for either reception or transmission of data. The CPU,
while waiting, must repeatedly check the status of the I/O module, and this process is known as
Polling. As a result, the level of the performance of the entire system is severely degraded.
Programmed I/O basically works in these ways:
Interrupt
The CPU issues commands to the I/O module then proceeds with its normal work until
interrupted by I/O device on completion of its work.
For input, the device interrupts the CPU when new data has arrived and is ready to be retrieved
by the system processor. The actual actions to perform depend on whether the device uses I/O
ports, memory mapping.
For output, the device delivers an interrupt either when it is ready to accept new data or to
acknowledge a successful data transfer. Memory-mapped and DMA-capable devices usually
generate interrupts to tell the system they are done with the buffer.
Although Interrupt relieves the CPU of having to wait for the devices, but it is still inefficient in
data transfer of large amount because the CPU has to transfer the data word by word between I/O
module and memory.
The main limitation of programmed I/O and interrupt driven I/O is given below:
Programmed I/O
Each instructions selects one I/O device (by number) and transfers a single character (byte)
Example: microprocessor controlled video terminal.
Four registers: input status and character, output status and character.
Interrupt-driven I/O
Primary disadvantage of programmed I/O is that CPU spends most of its time in a tight loop
waiting for the device to become ready. This is called busy waiting.
With interrupt-driven I/O, the CPU starts the device and tells it to generate an interrupt when it is
finished.
Done by setting interrupt-enable bit in status register.
Still requires an interrupt for every character read or written.
Interrupting a running process is an expensive business (requires saving context).
Requires extra hardware (DMA controller chip).
All these limitation can be overcome by the Introduction of DMA (Direct Memory Access)
To write block of 32 bytes from memory address 100 to device 4
1. CPU writes 32, 100, 4 into the first three DMA registers (memory address, count, device
number)
2. CPU puts code for WRITE (say 1) into fourth (direction) DMA register, which signals DMA
controller to begin operation
3. Controller reads (via bus request as CPU would) byte 100 from memory
4. Controller makes I/O request to write to device 4
5. Controller increments m.
Direct Memory Access (DMA)-Working and ImplementationShubham Kumar
DMA is an important functionality of any computing system involving transfer of data from/to an I/O device. In this presentation, a brief description has been provided regarding how the DMA functionality is implemented on a normal PC as well as on an Intel Quark SoC based small Embedded System.Different implementations of the DMA functionality depend on the Controller Hub present on the SouthBridge of the MotherBoard of the respective platform.For example->DMA implementation in Intel ICH7 is different from those in Intel ICH to Intel ICH6. In the slides, "Galileo" refers to the Intel Galileo Board containing Intel Quark SoC. Intel Galileo Board contains Designware DMA controllers." dmatest.c " is a memory-to-memory data transfer test driver implementing DMA. This module is loaded and then memcpy is checked using dmesg. Do take a look at the "External Links and References" given at the end of the PPT.
Name- Gold leaved white PoplarGenus- Populusspecies- albaAutho.pdfaptex1
In python,Tkinter is a Graphical user interface package.So,Tkinter tookit for GUI programming
supports protocol handler mechanism.
Protocol is taking care of how interaction takes place between application and windows manager.
self.parent.protocol(\"WM_DELETE_WINDOW\",self.quit_handler)
in the above line \"WM_DELETE_WINDOW\" is a protocol.What this protocl does is :it define
what is going to happen when a user who uses the application and closes window explicitely
using windows manager.
Then this protocol \"WM_DELETE_WINDOE\" bypasses to quit_handler().
That quit_handler() asks user \"whether he or she wants to quit or not\" then simply quit the
window.
Solution
In python,Tkinter is a Graphical user interface package.So,Tkinter tookit for GUI programming
supports protocol handler mechanism.
Protocol is taking care of how interaction takes place between application and windows manager.
self.parent.protocol(\"WM_DELETE_WINDOW\",self.quit_handler)
in the above line \"WM_DELETE_WINDOW\" is a protocol.What this protocl does is :it define
what is going to happen when a user who uses the application and closes window explicitely
using windows manager.
Then this protocol \"WM_DELETE_WINDOE\" bypasses to quit_handler().
That quit_handler() asks user \"whether he or she wants to quit or not\" then simply quit the
window..
MinOfFourNumbers.javaimport java.util.Scanner;public class MinOf.pdfaptex1
If I assume you meant supply is determined as [q_(s)=3p^2-4p] and demand is determined as
[q_(d)=-p^2+24] then I would calculate that the equilibrium is where [q_(s)=q_(d)] and p>0. So I
set up the equation [3p^2-4p=-p^2+24] I add [p^2] to both sides of the equation yielding [4p^2-
4p=24] I subtract 24 from each side, yielding the quadratic equation [4p^2-4p-24=0] I factor the
equation [(2p-6)(2p+4)=0] so that means [2p-6=0] or [2p+4=0] In the former case 2p=6 so p=3,
and in the latter 2p=-4 so p=-2. The economic nature of the question requires p>0, so [p!=-2] and
thus the equilibrium price is $3.00 each. Then to determine the equilibrium quantity, we solve
either q expression for p=3.
[q_(s)=3(3)^2-4(3)=3(9)-12=27-12=15]
[q_(d)=-(3^2)+24=-9+24=15]
So the equilibrium quantity is 15 items.
The price and quantity for market equilibrium is 15 items at $3.00 each.
Solution
If I assume you meant supply is determined as [q_(s)=3p^2-4p] and demand is determined as
[q_(d)=-p^2+24] then I would calculate that the equilibrium is where [q_(s)=q_(d)] and p>0. So I
set up the equation [3p^2-4p=-p^2+24] I add [p^2] to both sides of the equation yielding [4p^2-
4p=24] I subtract 24 from each side, yielding the quadratic equation [4p^2-4p-24=0] I factor the
equation [(2p-6)(2p+4)=0] so that means [2p-6=0] or [2p+4=0] In the former case 2p=6 so p=3,
and in the latter 2p=-4 so p=-2. The economic nature of the question requires p>0, so [p!=-2] and
thus the equilibrium price is $3.00 each. Then to determine the equilibrium quantity, we solve
either q expression for p=3.
[q_(s)=3(3)^2-4(3)=3(9)-12=27-12=15]
[q_(d)=-(3^2)+24=-9+24=15]
So the equilibrium quantity is 15 items.
The price and quantity for market equilibrium is 15 items at $3.00 each..
molarity = 0.252101.1 =0.001236 M percent =0.251002 =12.5 .pdfaptex1
If this is not soluble in water, this must be nonpolar,
if it si soluble in hexane, this must be nonpolar as well
therefore, we are certain this is nonpolar substance
with low vap pressure...
From the list, nearest BP for that pressure is chloroform with 60ºC (vs 58.) which is ok, since no
range is given.
CCl4 is nonpolar
In order to ensure this, you could use a chromatography with previous data, i.e. use chloroform
standard and run chromatography vs. unkown. If they behave the same ( same Rf value, and
retention time ) then this is most likely chloroform
Solution
If this is not soluble in water, this must be nonpolar,
if it si soluble in hexane, this must be nonpolar as well
therefore, we are certain this is nonpolar substance
with low vap pressure...
From the list, nearest BP for that pressure is chloroform with 60ºC (vs 58.) which is ok, since no
range is given.
CCl4 is nonpolar
In order to ensure this, you could use a chromatography with previous data, i.e. use chloroform
standard and run chromatography vs. unkown. If they behave the same ( same Rf value, and
retention time ) then this is most likely chloroform.
Initial concentration of Br- = 2.25 x 10e-3M1V1=M2V2therefore M2.pdfaptex1
From the graph, we can see that there are three values at which f(x)= 0
These are- x= -6,-2,3
Hence the answer is Option D
Solution
From the graph, we can see that there are three values at which f(x)= 0
These are- x= -6,-2,3
Hence the answer is Option D.
import java.util.Scanner;public class HornersPolynomial { .pdfaptex1
For a first order reaction rate constant , k = ( 2.303 /t )x log ( a / (a-x))
Where
a = initial amount
a-x = amount left after time t = a / 10
t = time = ?
k = rate constant = 3.43x10 -2 d -2
Plug the values we get t = ( 2.303 /k )x log ( a / (a-x))
= ( 2.303 / 3.43x10 -2 )x log ( a / (a/10))
= 67.14 days
Solution
For a first order reaction rate constant , k = ( 2.303 /t )x log ( a / (a-x))
Where
a = initial amount
a-x = amount left after time t = a / 10
t = time = ?
k = rate constant = 3.43x10 -2 d -2
Plug the values we get t = ( 2.303 /k )x log ( a / (a-x))
= ( 2.303 / 3.43x10 -2 )x log ( a / (a/10))
= 67.14 days.
Ethanol is miscible in water because of the hydroxyl functional grou.pdfaptex1
b) Security requirements
Security requirements are the outputs of the risk management activity. Inputs to the risk
management and information security strategy include business strategy, business processes, risk
assessments, business input analysis, information resources, and regulatory requirements.
Solution
b) Security requirements
Security requirements are the outputs of the risk management activity. Inputs to the risk
management and information security strategy include business strategy, business processes, risk
assessments, business input analysis, information resources, and regulatory requirements..
the diluted concentration of HCl = (0.120 M x 25..pdfaptex1
the diluted concentration of HCl = (0.120 M x 25.0 mL) / (25.0 + 40.0) mL =
0.0462 M [H+] = [HCl] = 0.0462 M pH = -log[H+] = -log0.0462 = 1.33
Solution
the diluted concentration of HCl = (0.120 M x 25.0 mL) / (25.0 + 40.0) mL =
0.0462 M [H+] = [HCl] = 0.0462 M pH = -log[H+] = -log0.0462 = 1.33.
AnswerThe net equation of the reaction catalyzed by the protein c.pdfaptex1
a) [21]+[19] = [40] = [4] {since 40 when divided ny 12 leaves a remainder of 4 }
b) [37][27] = [ 999] = [9] { Since now the remiander will be 9 when divided by 45}
c) [33]([83] - [67]) = [33] [16] = [528] = [28]
d) [18] + [8] = [26] = [0]. Hence additive inverse of [18] is [8].
Solution
a) [21]+[19] = [40] = [4] {since 40 when divided ny 12 leaves a remainder of 4 }
b) [37][27] = [ 999] = [9] { Since now the remiander will be 9 when divided by 45}
c) [33]([83] - [67]) = [33] [16] = [528] = [28]
d) [18] + [8] = [26] = [0]. Hence additive inverse of [18] is [8]..
Answer i command.The vi editor always starts in command mode. For.pdfaptex1
A Shareholder of a company is holding a share in the assets of the company. A shareholder is
also entitled to the profits which company makes by using those assets. As the basic fomat of
company distinguishes the Management function from the ownership, People managing the
company may or maynot be the owners i.e share holders of the company. Regulators often
require the companies to obtain approval of the shareholders via a resolution in the shareholders
meeting, thus the deciding power rests with the shareholders. However the extent of powers are
contained in the Legislature governing that corporation.
Shareholders have right in the assets of the corporation not in the day to day mangement of the
corporation.
Solution
A Shareholder of a company is holding a share in the assets of the company. A shareholder is
also entitled to the profits which company makes by using those assets. As the basic fomat of
company distinguishes the Management function from the ownership, People managing the
company may or maynot be the owners i.e share holders of the company. Regulators often
require the companies to obtain approval of the shareholders via a resolution in the shareholders
meeting, thus the deciding power rests with the shareholders. However the extent of powers are
contained in the Legislature governing that corporation.
Shareholders have right in the assets of the corporation not in the day to day mangement of the
corporation..
Answer (b) systems security and control.The businesses are now a .pdfaptex1
A chemical formula is an expression indicating the atoms and their number in a particular
compound.
Each element/atom is identified by its symbol and the number of atoms are given in the
subscript.
For example, one molecule of water contain 2 atoms of hydrogen and one atom of oxygen:
H2O
Hope this helps
Solution
A chemical formula is an expression indicating the atoms and their number in a particular
compound.
Each element/atom is identified by its symbol and the number of atoms are given in the
subscript.
For example, one molecule of water contain 2 atoms of hydrogen and one atom of oxygen:
H2O
Hope this helps.
A. Temeperature of refrigeratorsIntervalB. Horspower of .pdfaptex1
2) b) Understory is rich in humidity hence supports fungi
3) a) canopy includes plant crowns
4) c) herbaceous
5) d) leaf litter/soil
Solution
2) b) Understory is rich in humidity hence supports fungi
3) a) canopy includes plant crowns
4) c) herbaceous
5) d) leaf litter/soil.
48. The answer is Botulism. Botulism ia an illness that brings about.pdfaptex1
1 gallon gasoline = 3.785 L = 3.785 x 803 grams
Now, total heat produced = weight(in gms) x heat of combustion = 3.785 x 803 x 48 kJ
=145889.04 kJ =145.9 MJ
IT IS VERY LARGE NUMBER !!!!
Solution
1 gallon gasoline = 3.785 L = 3.785 x 803 grams
Now, total heat produced = weight(in gms) x heat of combustion = 3.785 x 803 x 48 kJ
=145889.04 kJ =145.9 MJ
IT IS VERY LARGE NUMBER !!!!.
2) b) Understory is rich in humidity hence supports fungi3) a) can.pdfaptex1
(A) The answer is b. increases
Electricity in the form of electrons are transported through the solution by charged ions of the
electrolyte. As the electrolyte concentration increases, so does the number of charge carriers and
hence the amount of charge and electricity conducted increases.
(B) Acetic acid (CH3COOH) is a weak acid and partially ionizes in water:
CH3COOH + H2O => CH3COO- + H3O+
The charged acetate (CH3COO- ) and hydroxonium (H3O+) ions are responsible for electrical
conductivity.
In 6 M acetic acid, water is in excess and and the ionization proceeds as shown above to give an
electrolyte solution with charged ions that conduct electricity.
In glacial acetic acid, there is very little water present and ionization is negliglble. Almost all the
acetic acid remains in the non-conducting molecular form (CH3COOH) and there are no charged
ions present. Thus glacial acetic acid does not conduct electricity.
Solution
(A) The answer is b. increases
Electricity in the form of electrons are transported through the solution by charged ions of the
electrolyte. As the electrolyte concentration increases, so does the number of charge carriers and
hence the amount of charge and electricity conducted increases.
(B) Acetic acid (CH3COOH) is a weak acid and partially ionizes in water:
CH3COOH + H2O => CH3COO- + H3O+
The charged acetate (CH3COO- ) and hydroxonium (H3O+) ions are responsible for electrical
conductivity.
In 6 M acetic acid, water is in excess and and the ionization proceeds as shown above to give an
electrolyte solution with charged ions that conduct electricity.
In glacial acetic acid, there is very little water present and ionization is negliglble. Almost all the
acetic acid remains in the non-conducting molecular form (CH3COOH) and there are no charged
ions present. Thus glacial acetic acid does not conduct electricity..
Thermodynamic entropy is a non-conserved state fu.pdfaptex1
Thermodynamic entropy is a non-conserved state function that is of great
importance in the sciences of physics and chemistry. Historically, the concept of entropy evolved
in order to explain why some processes (permitted by conservation laws) occur spontaneously
while their time reversals (also permitted by conservation laws) do not; systems tend to progress
in the direction of increasing entropy. For isolated systems, entropy never decreases. This fact
has several important consequences in science: first, it prohibits \"perpetual motion\" machines;
and second, it implies the arrow of entropy has the same directionality as the arrow of time.
Increases in entropy correspond to irreversible changes in a system, because some energy is
expended as waste heat, limiting the amount of work a system can do. In statistical mechanics,
entropy is a measure of the number of ways in which a system may be arranged, often taken to
be a measure of \"disorder\" (the higher the entropy, the higher the disorder). This definition
describes the entropy as being proportional to the natural logarithm of the number of possible
microscopic configurations of the individual atoms and molecules of the system (microstates)
which could give rise to the observed macroscopic state (macrostate) of the system. The constant
of proportionality is the Boltzmann constant. - Wiki
Solution
Thermodynamic entropy is a non-conserved state function that is of great
importance in the sciences of physics and chemistry. Historically, the concept of entropy evolved
in order to explain why some processes (permitted by conservation laws) occur spontaneously
while their time reversals (also permitted by conservation laws) do not; systems tend to progress
in the direction of increasing entropy. For isolated systems, entropy never decreases. This fact
has several important consequences in science: first, it prohibits \"perpetual motion\" machines;
and second, it implies the arrow of entropy has the same directionality as the arrow of time.
Increases in entropy correspond to irreversible changes in a system, because some energy is
expended as waste heat, limiting the amount of work a system can do. In statistical mechanics,
entropy is a measure of the number of ways in which a system may be arranged, often taken to
be a measure of \"disorder\" (the higher the entropy, the higher the disorder). This definition
describes the entropy as being proportional to the natural logarithm of the number of possible
microscopic configurations of the individual atoms and molecules of the system (microstates)
which could give rise to the observed macroscopic state (macrostate) of the system. The constant
of proportionality is the Boltzmann constant. - Wiki.
I is oxidized by 6 electrons as the oxidation sta.pdfaptex1
I is oxidized by 6 electrons as the oxidation state of I in I- is -1 while in IO3- is +5.
Solution
I is oxidized by 6 electrons as the oxidation state of I in I- is -1 while in IO3- is +5..
The main difference is that Democritus was not a .pdfaptex1
The main difference is that Democritus was not a scientist he was a philosopher as
such he only theorized that matter could not be indefinitely divided, that there is a limit (now
know to be the atom). Dalton on the other had based his theory of atoms on scientific
experimentation and observation. Demeocritus used reason vs. Dalton used scientific method
Solution
The main difference is that Democritus was not a scientist he was a philosopher as
such he only theorized that matter could not be indefinitely divided, that there is a limit (now
know to be the atom). Dalton on the other had based his theory of atoms on scientific
experimentation and observation. Demeocritus used reason vs. Dalton used scientific method.
for acidic nature is should give H+ equation H.pdfaptex1
for acidic nature is should give H+ equation : HSO3- -----> H+ + SO3^2-
ANSWER
Solution
for acidic nature is should give H+ equation : HSO3- -----> H+ + SO3^2-
ANSWER.
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Sectors of the Indian Economy - Class 10 Study Notes pdf
Direct memory access (DMA) is a function that allows an inputoutput.pdf
1. Direct memory access (DMA) is a function that allows an input/output (I/O) device to send or
receive data directly to or from the main memory, bypassing the CPU to speed up memory
operations. The process is managed by a chip known as a DMA controller (DMAC).With DMA,
the CPU can process other tasks while data transfer is being performed.
In a typical process if data needs to be transfered , DMA controller puts a DMA request signal to
the CPU, asking its permission to use the bus.The CPU completes its current bus activity, stops
driving the bus, and returns a DMA acknowledge signal to the DMA controller.The DMA
controller then reads and writes one or more memory bytes, driving the address, data, and control
signals as if it were itself the CPU.
Once the transfer is complete, the DMA controller stops driving the bus and deasserts the DMA
request signal. The CPU can then remove its DMA acknowledge signal and resume control of
the bus.
Hope, It will help you.
Thanks
Solution
Direct memory access (DMA) is a function that allows an input/output (I/O) device to send or
receive data directly to or from the main memory, bypassing the CPU to speed up memory
operations. The process is managed by a chip known as a DMA controller (DMAC).With DMA,
the CPU can process other tasks while data transfer is being performed.
In a typical process if data needs to be transfered , DMA controller puts a DMA request signal to
the CPU, asking its permission to use the bus.The CPU completes its current bus activity, stops
driving the bus, and returns a DMA acknowledge signal to the DMA controller.The DMA
controller then reads and writes one or more memory bytes, driving the address, data, and control
signals as if it were itself the CPU.
Once the transfer is complete, the DMA controller stops driving the bus and deasserts the DMA
request signal. The CPU can then remove its DMA acknowledge signal and resume control of
the bus.
Hope, It will help you.
Thanks
