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1. Dear students get fully solved assignments
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ASSIGNMENT
PROGRAM MCA(REVISED FALL 2012)
SEMESTER FOURTH
SUBJECT CODE & NAME MCA4010- MICROPROCESSOR
CREDITS 4
BK ID B1778
MAX. MARKS 60
Note: Answer all questions. Kindly note that answers for 10 marks questions should be
approximately of 400 words. Each question is followed by evaluation scheme.
Q. 1. Write short notes on:
a) Central Processing Unit
Answer:The central processing unit (CPU) of a computer is a piece of hardware that carries out the
instructions of a computer program. It performs the basic arithmetical, logical, and input/output
operations of a computer system. The
b) Memory Unit
Answer:Incomputing,memoryreferstothe computer hardware devices used to store information
for immediate use in a computer; it is synonymous with the term "primary storage". Computer
memoryoperatesata highspeed,forexample random-accessmemory (RAM), as a distinction from
storage that provides slow-to-access program and data storage but offers higher capacities. If
needed, contents of the computer memory can be transferred to secondary storage, through a
memory management technique called "virtual
Most semiconductormemoryisorganizedintomemorycellsor bistable flip-flops, each storing one
bit(0 or 1). Flashmemoryorganizationincludes both one bit per memory cell and multiple bits per
cell (called MLC,
Q. 2. Write short notes on:

2. a) Bus Interface Unit (BIU)
Answer:In computer architecture, a bus (related to the Latin "omnibus", meaning "for all") is a
communication system that transfers data between components inside a computer, or between
computers. This expression covers all related hardware components (wire, optical fiber, etc.) and
software, including
b) Execution Unit (EU)
Answer:In computer engineering, an execution unit (also called a functional unit) is a part of the
central processing unit (CPU) that performs the operations and calculations as instructed by the
computerprogram.It may have itsowninternal control sequence unit, which is not to be confused
with the CPU's main control unit, some registers, and other internal units such as a sub–arithmetic
logicunit(sub-ALU) ora floatingpointunit(FPU),orsome smaller andmore specificcomponents. It
is common for modern
Q. 3. Write short notes on:
a) REP Prefix
Answer:If the directionflagisclear,the CPU incrementsESIandEDI afteroperatinguponeach string
element.Forexample,if the directionflag is clear, then executing MOVS will move the byte, word,
or double word at ESI to EDI and will increment ESI and EDI by one, two, or four. When specifying
the REP prefix before thisinstruction,the CPUincrementsESIandEDI for eachelementinthe string.
At completion, the ESI and EDI registers will be pointing at the first item beyond the strings.
b) Table Translation
Answer:A translationlookaside buffer (TLB) is a cache that memory management hardware uses to
improve virtual address translation speed. The majority of desktop, laptop, and server processors
includesone ormore TLBs in the memorymanagementhardware,and it is nearly always present in
any hardware that utilizes paged or segmented virtual memory.
The TLB is sometimesimplemented as content-addressable memory (CAM). The CAMsearch key is
the virtual address and the search
Q. 4. Describe about Key-code Data Formats and FIFO Status Word formats.
Answer:Key Code Qualifier is an error-code returned by a SCSI device.
Whena SCSI targetdevice returnsacheck conditioninresponse toa command, the initiator usually
thenissuesaSCSI RequestSense command.Thisprocessispart of a SCSI protocol called Contingent

3. Allegiance Condition. The target will respond to the Request Sense command with a set of SCSI
sense data which includes three fields giving increasing levels of detail about the error:
K - sense key - 4 bits, (byte 2 of Fixed sense
Q. 5. Write a note on
(a) RS 232 standard
Answer:Intelecommunications,RS-232isa standard forserial communication transmission of data.
It formally defines the signals connecting between a DTE (data terminal equipment) such as a
computer terminal, and a DCE (data circuit-terminating equipment, originally defined as data
communicationequipment),suchas a modem. The RS-232 standard is commonly used in computer
serial ports.The standarddefinesthe electrical characteristicsand timing of signals, the meaning of
signals, and the physical size
(b) IEEE 488 standard
Answer:IEEE-488 is a short-range digital communications 8-bit parallel multi-master interface bus
specification. It was created in the late 1960s for use with automated test equipment and is still in
use for that purpose. IEEE-488 was created as HP-IB (Hewlett-Packard Interface Bus) and is
commonlycalledGPIB(General PurposeInterfaceBus).Ithasbeenthe subject of several standards.
IEEE-488 specifies a 24-pin Amphenol
Q. 6. Write short note on:
a) Parallel Printer Interface (LPT)
Answer:Short for Line Printer Terminal, LPT is used by IBM compatible computers as an
identification for the parallel port such as LPT1, LPT2, or LPT3. This is commonly required when
installing a printer on an IBMcompatible computer. The majority of all computers utilize LPT1 and
do not have an option for another LPT port unless additional ports are added to the computer.
b) Universal Serial Bus (USB)
Answer:USB,short for Universal Serial Bus,isanindustry standard developed in the mid-1990s that
defines the cables, connectors and communications protocols used in a bus for connection,
communication, and power supply between computers and electronic devices. It is currently
developed by the USB Implementers Forum.

4. Dear students get fully solved assignments
Send your semester & Specialization name to our mail id :
help.mbaassignments@gmail.com
or
call us at : 08263069601