HSC Science (Computer Science)
Academic Year: 2023-2024
Date & Time: 5th August 2024, 11:00 am
Duration: 3h
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Instructions:
- All questions are compulsory.
- Figures to the right indicate full marks.
- Use of any type of calculator not allowed.
- Draw a neat diagram wherever necessary.
______ has highest priority in following interrupts.
RST 7.5
RST 6.5
TRAР
INTR
Chapter:
The highest order register of register pair PSW is ______ registor.
A
H
Flag
SP
Chapter:
Micro-controller 8052 ______ has bytes of ROM.
4KB
8KB
2KB
16KВ
Chapter:
The rang of network cabling is extended by ______.
MODEM
REPEATER
ROUTER
HUB
Chapter:
Explain the function of the following pins of 8085 Micro-processor:
RST 5.5
Chapter:
Explain the function of the following pins of 8085 Micro-processor:
HOLD
Chapter:
Write the function of following pin in 8085 Microprocessor:
`bar(WR)`
Chapter:
Write any three applications of Micro-controllers.
Chapter:
Write any two advantages of the following Network Topologies:
STAR
Chapter:
Write any two advantages of the following Network Topologies:
BUS
Chapter:
Write any two advantages of the following Network Topologies:
RING
Chapter:
The accumulator of the 8085 microprocessor contains data BEH and register B contains data 46H. What will be the content of the accumulator in hexadecimal after execution of the following instruction independently:
RLC?
Chapter:
The accumulator of the 8085 microprocessor contains data BEH and register B contains data 46H. What will be the content of the accumulator in hexadecimal after execution of the following instruction independently:
ORI 79H
Chapter:
The accumulator of the 8085 microprocessor contains data BEH and register B contains data 46H. What will be the content of the accumulator in hexadecimal after execution of the following instruction independently:
ANA B
Chapter:
Explain any four flags of 8085, giving examples.
Chapter:
Explain the following characteristics of transmission media:
Cost of Media
Chapter:
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Explain the following characteristics of transmission media:
Band width
Chapter:
Explain the following Transmission Media characteristics:
Attention
Chapter:
Draw a labeled functional block diagram of micro-processor 8085.
Chapter:
Write any eight functions of the Microcontroller 8051.
Chapter:
Write three primary functions of the CPU of a microcomputer.
Chapter:
Explain the following instruction of Micro-processor 8085 with an example:
CMP M
Chapter:
Explain the following instruction of Micro-processor 8085 with an example:
STA addr
Chapter:
Explain the following instruction of Micro-processor 8085 with an example:
ADD r
Chapter:
Compare any three characteristics of Co-axial and Fibre-optics cable.
Chapter:
Describe the following registers of the 8085 Micro-processor:
Program Counter
Chapter:
Describe the following registers of the 8085 Micro-processor:
Instruction Register
Chapter:
Describe the following registers of the 8085 Micro-processor:
Stack Pointer
Chapter:
Describe the following registers of the 8085 Micro-processor:
Accumulator
Chapter:
Explain the following advanced feature of the Pentium processor:
Dual pipelining
Chapter:
Explain the following advanced feature of the Pentium processor:
On-chip Cache Memory
Chapter:
Explain the following feature of Pentium Microprocessor:
Branch Prediction
Chapter:
Explain the following feature of Pentium Microprocessor:
64-bit data bus
Chapter:
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Explain the following addressing mode of the 8085 Microprocessor with one example:
Register Addressing Mode
Chapter:
Explain the following addressing mode of the 8085 Microprocessor with one example:
Direct Addressing Mode
Chapter:
Explain the immediate addressing mode of 8085 Micro-processor with examples.
Chapter:
How are subroutines called? Explain with an example.
Chapter:
Explain any three generations of Micro-processor with one example of each generation.
Chapter:
Explain use of the following network connectivity devices in the communication system:
MODEM
Chapter:
Explain use of the following network connectivity device in the communication system:
REPEATER
Chapter:
Explain use of the following network connectivity device in the communication system:
ROUTER
Chapter:
Explain use of the following network connectivity device in the communication system:
HUB
Chapter:
Write an Assembly Language Program to count the number of even data bytes occurring in a block stored from memory location CO30H to CO37H. Store the count at memory location CO38H.
Chapter:
Write an Assembly Language Program to multiply two one byte data stored at memory location CO60H and CO61H. Store the two byte result starting with memory location CO62H.
Chapter:
Write an Assembly Language Program to add two 16-bit numbers. The first 16-bit number is stored from memory location CO40H and CO41H. The second 16-bit number is stored from memory location CO42H and CO43H. Store the three byte result starting from memory location CO50H.
Chapter:
Write an Assembly Language Program to exchange the contents of two blocks of data. First block is stored from memory location CO20H to CO24H. The second block is stored from CO70H to CO74H.
Chapter:
Write an Assembly Language Program to subtract two one-byte data stored at memory locations CO30H and CO31H. Store the absolute difference at memory location CO32Н.
Chapter:
Write an Assembly Language Program to count the number of 1’s data byte stored at memory location C030H. Store the count at memory location C031H.
Chapter:
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