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Summer 2015 ASSIGNMENT
PROGRAM MCA
SEMESTER FOURTH
SUBJECT CODE & NAME MCA4010-
MICROPROSESSOR
CREDIT 4 BK ID B1778 MAX. MARKS 60
Q1. Write short notes on:
a) Central Processing Unit
b) Memory Unit 5+5
Answer:
Central Processing Unit:
The central processing unit (CPU) is the electronic brain of
the computer. CPU consists of Arithmetic Logic Unit (ALU) and Control Unit
(CU).
(I)
Arithmetic Logic Unit
(ALU): The arithmetic logic unit (ALU) is
responsible for arithmetic and logical operations. Basically an
Arithmetic-Logic Unit (ALU) is an electronic circuit used to carry out the
2 Write
short notes on:
a) Bus
Interface Unit (BIU)
b)
Execution Unit (EU) 5+5 10
Answer:
A)
Bus Interface Unit (BIU): The BIU
handles all the data and address on the buses for the execution unit (EU). It
performs all bus operations such as instruction fetching, reading and writing
operands for memory and calculating the addresses of the memory operands. The
instruction bytes are transferred to
3 Write
short notes on:
a) REP
Prefix
b)
Table Translation 5+5 10
Answer:
A)
REP Prefix
Because string operations
inherently involve looping, the 8086 machine language includes a prefix that
considerably simplifies the use of string primitives with loops. This prefix
has the machine code
1 1 1 1 10 0 1 Z
where, for the CMPS and SCAS
4 Describe
about Key-code Data Formats and FIFO Status Word formats. 5+5 10
Answer:
Key-code Data Formats:
After a valid Key closure, the key code is entered as a byte
code into the FIFO RAM, in the following format, in scanned keyboard mode. The
Key code format contains 3-bit contents of the internal row counter, 3-bit
contents of the column counter and status of the SHIFT and CNTL Keys The data
format of the Key code in scanned keyboard mode
5 Write
a note on
(a) RS
232 standard
(b) IEEE 488 standard 5+5 10
Answer:
A) RS232 Standard
RS232 standard is developed by the Electronic Industry
Association (EIA) in 1962 and was revised and renamed as RS232C. RS stands for
"recommended standard." This is a standard hardware interface used
for implementing asynchronous serial data communication ports on devices such
as CRT terminals, printers, modems and keyboards. RS-232 can be plugged
straight into the computer’s serial port (know as COM or Comm port). RS-232 has
been around as a standard for decades as an electrical interface between Data
Terminal Equipment (DTE) and Data Circuit- Terminating Equipment (DCE) such
6 Write
short note on:
a)
Parallel Printer Interface (LPT)
b)
Universal Serial Bus (USB) 5+5 10
Answer:
A)
Parallel Printer Interface
(LPT)
The parallel printer interface
(LPT) is located on the rear panel of the PC. The LPT stands for line printer.
The Parallel Port Interface on the PC compatible computer is one of the most
flexible interfaces for connecting the PC to a wide range of devices. The
interface was originally intended purely for connection to printers but due to
the simple nature of the digital control lines it has found many other uses.
Its
Get fully solved assignment. Buy online from website
online store
or
plz drop a mail with your sub code
we will revert you within 2-3 hour or immediate
Charges rs
125/subject and rs 500/semester only.
if urgent then call us on 08791490301, 08273413412
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