Computers have had a significant impact on society by changing work and leisure activities and being used by all demographic groups. The document discusses how computers are used in many aspects of modern life, including at home for communication and entertainment, in education, small businesses, industry, government, and healthcare. It also provides details on the basic components of a computer system, including hardware, software, data, and users. The hardware components covered include the motherboard, processor, memory (RAM, ROM, registers, cache), storage (hard disks, optical disks like CDs, DVDs, and Blu-ray), and input/output devices. The document provides a high-level overview of how computers function and their role in society.
C language computer introduction to the computer hardwareNIKHIL KRISHNA
C (/ˈsiː/, as in the letter c) is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, and therefore it has found lasting use in applications that had formerly been coded in assembly language, including operating systems, as well as various application software for computers ranging from supercomputers to embedded systems.
C was originally developed by Dennis Ritchie between 1969 and 1973 at Bell Labs,[5] and used to re-implement the Unix operating system.[6] It has since become one of the most widely used programming languages of all time,[7][8] with C compilers from various vendors available for the majority of existing computer architectures and operating systems. C has been standardized by the American National Standards Institute (ANSI) since 1989 (see ANSI C) and subsequently by the International Organization for Standardization (ISO).
C language computer introduction to the computer hardwareNIKHIL KRISHNA
C (/ˈsiː/, as in the letter c) is a general-purpose, imperative computer programming language, supporting structured programming, lexical variable scope and recursion, while a static type system prevents many unintended operations. By design, C provides constructs that map efficiently to typical machine instructions, and therefore it has found lasting use in applications that had formerly been coded in assembly language, including operating systems, as well as various application software for computers ranging from supercomputers to embedded systems.
C was originally developed by Dennis Ritchie between 1969 and 1973 at Bell Labs,[5] and used to re-implement the Unix operating system.[6] It has since become one of the most widely used programming languages of all time,[7][8] with C compilers from various vendors available for the majority of existing computer architectures and operating systems. C has been standardized by the American National Standards Institute (ANSI) since 1989 (see ANSI C) and subsequently by the International Organization for Standardization (ISO).
Basics IT Recruiting | Technical Recruiting | US Staffing | Training |Tips |T...Syed Aiyaz
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“Computer is an electronic machine that can store, recall and process data. It can perform
tasks or complex calculation according to a set of instructions or programs. The terms and definitions used in computer system
Basics IT Recruiting | Technical Recruiting | US Staffing | Training |Tips |T...Syed Aiyaz
First information based series on Information technology covering topics like IT, Computer Usage, Data Storage, Types of computers, computer hardware, computer software, computer firmware, enterprise storage & more.
“Computer is an electronic machine that can store, recall and process data. It can perform
tasks or complex calculation according to a set of instructions or programs. The terms and definitions used in computer system
I removed this set of notes previously and I have decided to re-upload it again for benefit of all.
I have typed this few years ago and I hope it will be useful for anyone.
Computer Introduction-Lecture02 for applied scince college students, Seiyun University , yemen 2023-2024 Academic year. لطلاب كلية العلوم التطبيقية بجامعة سيئون
مقدمة في علوم الحاسوب المحاضرة الثانية
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
Model Attribute Check Company Auto PropertyCeline George
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Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
Antifertility, Toxicity studies as per OECD guidelines
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
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It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
Francesca Gottschalk - How can education support child empowerment.pptxEduSkills OECD
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2. Computers In Society
More impact than any other invention
Changed
work and leisure activities
Used by all demographic groups
Computers are important because:
Provide
information to users
Information is critical to our society
Managing information is difficult
3. Computers In Society
Computers at home
Many homes have multiple computers
Examples
Staying in touch with family and friends
Information like weather
Computers are used for
Business
Entertainment
Communication
Education
4. Computers In Society
Computers in education
Computer literacy required at all levels
Computers in small business
Makes businesses more profitable
Allows owners to manage
Small business can handle their own accounts and
payrolls
Computers in industry
Computers are used to design products
Assembly lines are automated
5. Computers In Society
Computers in government
Necessary
to track data for population
Police
officers
Tax calculation and collection
Millitary
Governments
were the first computer users and
responsible for development of new technology
US government played a key role in development
of internet
6. Computers In Society
Computers in health care
Revolutionized
health care
New treatments possible
Scheduling of patients has improved
Delivery of medicine is safer
More easy for doctors to share information
7. Parts of the Computer System
1B-7
Computer systems have four parts
Hardware
Software
Data
User
8. Parts of the Computer System
Hardware
Mechanical
devices in the computer
Anything that can be touched
Software
Tell
the computer what to do
Also called a program
Thousands of programs exist
9. Parts of the Computer System
Data
Pieces
of information
Computer organize and present data
Users
People
operating the computer
Most important part
Tell the computer what to do
14. Motherboard
Every device in a computer is either attached
to the motherboard directly or it is connected
to the motherboard.
The processor is usually directly on the
motherboard
Has circuits to connect the processor with
other components such as memory
15. Motherboard
In most personal computers the internal
devices such as sound cards, video cards are
directly plugged into the motherboard.
16. Processor
Processing devices
Brains
of the computer
Carries out instructions from the program
Manipulate the data
Most computers have several processors
Central Processing Unit (CPU)
Secondary processors
Processors made of silicon and copper
17. Processor
Has
three basic parts
Arithmetic
executes all the arithmetic and logic instructions
Control
Logic Unit (ALU)
Unit
decodes instructions and determines which is next to be
executed
Buses/Registers
Buses are paths for information entering/exiting the CPU
Registers are memory for processing information
19.
Processor is also called the CPU
It is the brain of the computer and does all the
calculations and processing.
20. Multi-core processor
A multi-core processor is a
single computing component with two or more
independent actual central processing
units (called "cores“.
21. The Central Processing Unit
The CPU continuously follows the fetch-
decode-execute cycle:
Retrieve an instruction from main memory
fetch
execute
Carry out the
instruction
decode
Determine what the
instruction is
23. Primary Storage
On board memory (located on the
motherboard)
Very fast, but expensive
Types
– Random Access Memory
ROM – Read Only Memory
Registers
Cache
RAM
24. Random Access Memory
RAM comes in integrated circuit chips, often
called modules or sticks, which are plugged
directly into a computer's motherboard.
Main memory is directly or indirectly
connected to the central processing unit via
a memory bus
26. Random Access Memory
RAM - Random Access Memory
Read/write capability
Contents lost when computer is turned off (volatile)
A program must be in RAM for it to execute
128 to 256MB for a typical desktop computer
You can read or write at any address, as opposed to
sequential memory
RAM impact on the speed and power of a computer
The unit of measurement for RAM is byte
These days RAM’s are so large that we talk about GB
1GB is 1 billion bytes (1000,000,000)
28. Registers
located inside the processor
Registers are the fastest of all forms of
computer data storage.
Holds only 32 bit or 64 bit
Example we have to add 23 and 14, then one
register will store 23 and the other 14
29. Cache
The cache is a smaller, faster memory which
stores copies of the data from the most
frequently used RAM locations.
When the processor needs to read from or
write to a location in main memory, it first
checks whether a copy of that data is in the
cache.
There are two levels of cache L1 and L2
L1 is located on the processor chip itself
L2 is not on the processor chip but is very fast
as well
30. ROM
ROM - Read Only Memory
It
is written on to only once
Read but not write capability
Permanent (non volatile)
Stores the preliminary instructions to be executed
when the computer is turned on, for example
To
check RAM
To check communications with peripheral devices
Bootstrap loader program
31. Secondary Storgae
Secondary Storage (secondary memory)
External
devices (not on the motherboard);
either inside or outside the computer
Store programs and data permanently
Slower, but cheaper
35. Optical Storage
The CD surface is a mirror covered with
billions of tiny bumps that are arranged in a
long, tightly wound spiral.
The CD player reads the bumps with a precise
laser and interprets the information as bits of
data.
36. DVD
DVD’s are made from the same material as a
CD and are physically the same size but they
can store a lot more data
The reason is that in a CD there is only one
layer that has data arranged in spiral form
In a DVD there are several thin layers that can
store data that are joined together.
The materials on the top layers allows the
laser to pass through to the inner layer to read
data.
37. Blu Ray
The format offers more than five times the storage
capacity of traditional DVDs and can hold up to 25GB
on a single-layer disc
While current optical disc technologies such as
DVD, DVD±R, DVD±RW, and DVD-RAM rely on a red
laser to read and write data, the new format uses a
blue-violet laser instead, hence the name Blu-ray
The benefit of using a blue-violet laser (405nm) is that
it has a shorter wavelength than a red laser
(650nm), which makes it possible to focus the laser
spot with even greater precision. This allows data to
be packed more tightly and stored in less space, so
it's possible to fit more data on the disc even though
it's the same size as a CD/DVD
38. CD vs. DVD vs. Blu Ray
Most DVDs will hold about 4 hours of quality
video
A CD can have 700 MB, or approximately 80
minutes of audio.
DVD stores 4.7 GB of data
Blu Ray can store upto 50 GB data
*to get an idea 2 GB storage can give you approximately 300 mp3 songs
39.
40. Hardware
Units of measure
All
done relative to a Byte (8 bits - 1 character)
KB = Kilobyte - 1 thousand bytes (1024)
MB = Megabyte - 1 million bytes (1,048,576)
GB = Gigabyte - 1 billion bytes
TB = Terabyte - 1 trillion bytes
41. Software Runs The Machine
Tells the computer what to do
Reason people purchase computers
Two types
System
software
Application software
42. Software Runs The Machine
System software
Most
important software
Operating system
Windows
Network
XP
operating system (OS)
Windows
Server 2003
Utility
Symantec AntiVirus
43. References
http://en.wikipedia.org/wiki/Multi-core_processor
Chapter 1b of Text book
http://computer.howstuffworks.com/ram.htm
http://www.howstuffworks.com/hard-disk.htm
http://www.ehow.com/how-does_4899593_ramwork-computer.html
http://tuxthink.blogspot.com/2010/06/memoryhierarchy.html
http://en.wikipedia.org/wiki/Computer_data_storag
e
Editor's Notes
Discuss how automobiles changed our lives
A computer's RAM is strictly meant to provide short term-memory space that can be accessed as quickly as possible. Since a computer hard drive contains so much data, which must be accessed by the spinning of a physical disk, accessing the data is much slower than using a data module with no moving parts. In this way, the RAM acts as an intermediary between the hard drive and the processor; the hard drive sends data to the RAM necessary for running a given application, and the processor accesses the data saved to the RAM to run the application. As soon as a certain process stops, the data saved the RAM associated with that process is dropped, freeing it up for use toward something else. This is, in part, why closing a few applications while multitasking will speed up other applications that remain open.
Basically ROM stores the information necessary to start a computer.
Hard disk is slower then RAM beacuse it is a mechanical system, the read and write head has to phyiscally move to a different location. Where as RAM is a purely electronic system