Sr. No may be change
1 .What are flip flop circuits in digital electronics? Discuss race around condition in J-K Flip Flop.
2 .What is virtual memory? How address mapping is done in cache memory? Elaborate your answer with examples.
3 .Design 8:1 Mux for a given function, f=Σ (0, 1,5,7,9, 13)
4 .How branching takes place in Instruction pipeline. Explain with suitable examples
5 .Write short notes on any three of the following.
- Microprocessor
- b) Modes of data transfer.
- I/O processor
- Associative memory
- Software and Hardware interrupt
6 .Design a mod-15 counter. Explain the various steps in designing the counter
7. What are shift registers? Design a 8 bit shift register with features like PISO, SISO, SIPO and PIPO.
8 .Compare RISC & CISC architecture.
Case Detail:
- Give the organization of Micro programmed control unit and explain its operation. Explain the role of address sequencer in detail. If you convert your control unit to hardwired unit, what are the changes you will observe?
2. Explain in details the block diagram of timing and control unit.
Assignment –c
Question No. 1
Where does a computer add and compare data?
Options
- Hard disk
- Floppy disk
- CPU chip
- Memory chip
Question No. 2
Which of the following registers is used to keep track of address of the memory location where the next instruction is located?
- Memory Address Register
- Memory Data Register
- Instruction Register
- Program Register
Question No. 3
A complete microcomputer system consist of--
- microprocessor
- memory
- peripheral equipment
- all of above
Question No. 4
CPU does not perform the operation--
Options
- Data transfer
- Logic operation
- Arithmetic operation
- All of above
Question No. 5
Pipelining strategy is called implement--
- Instruction execution
- Instruction pre-fetch
- Instruction decoding
- Instruction manipulation
Question No. 6
A stack is--
Options
- An 8-bit register in the microprocessor
- A 16-bit register in the microprocessor
- A set of memory locations in R/WM reserved for storing information temporarily
- A 16-bit memory address stored in the program counter
Question No. 7
. A stack pointer is--
Options
- A 16-bit register in the microprocessor that indicate the beginning of the stack
- A register that decodes and executes 16-bit arithmetic expression
- The first memory location where a subroutine address is stored.
- A register in which flag bits are stored
Question No. 8
The branch logic that provides decision making capabilities in the control unit is known as--
Options
- Controlled transfer
- Conditional transfer
- Unconditional transfer
- None of above
Question No. 9
Interrupts which are initiated by an instruction are--
Options
- Internal
- External
- Hardware
- Software
Question No. 10
A time sharing system imply--
Options
- More than one processor in the system
- More than one program in memory
- More than one memory in the system
- None of above
Question No. 11
Processors of all computers, whether micro, mini or mainframe must have--
Options
- ALU
- Primary Storage
- Control unit
- All of above
Question No. 12
What is the control unit's function in the CPU?
Options
- To transfer data to primary storage
- To store program instruction
- To perform logic operations
- To decode program instruction
Question No. 13
What is meant by a dedicated computer?
Options
- Which is used by one person only?
- Which is assigned to one and only one task?
- Which does one kind of software?
- Which is meant for application software only?
Question No. 14
The most common addressing techniques employed by a CPU is--
Options
- Immediate
- Direct
- Indirect
- Register
- All of the above
Question No. 15
Pipeline implements--
Options
- Fetch instruction
- Decode instruction
- Fetch operand
- Calculate operand
- All of above
Question No. 16
Which of the following code is used in present day computing was developed by
IBM Corporation?
Options
- ASCII
- Hollerith Code
- Baudot code
- EBCDIC code
Question No. 17
When a subroutine is called, the address of the instruction following the CALL Instructions stored in/on the--
Options
- Stack pointer
- Accumulator
- Program counter
- Stack
Question No. 18
. A micro program written as string of 0's and 1's is a--
Options
- Symbolic microinstruction
- Binary microinstruction
- Symbolic micro program
- Binary micro program
Question No. 19
Memory access in RISC architecture is limited to instructions--
Options
- CALL and RET
- PUSH and POP
- STA and LDA
- MOV and JMP
Question No. 20
. A collection of 8 bits is called--
Options
- Byte
- Word
- Record
- Code
Question No. 21
An AND gate generates a high output when--
Options
- Any one of its inputs is high
- All of its inputs are high
- When all of its inputs are low
- Power fails
Question No. 22
How many address lines are needed to address each memory locations in a
2048 x 4 memory chip?
Options
- 10
- 11
- 8
- 12
Question No. 23
. A computer program that converts an entire program into machine language at
One time is called a/an--
Options
- Interpreter
- Simulator
- Compiler
- Commander
Question No. 24
In immediate addressing the operand is placed--
Options
- In the CPU register
- After OP code in the instruction
- In memory
- In stack
Question No. 25
Microprocessor 8085 can address location up to--
Options
- 32K
- 128K
- 64K
- 1M
Question No. 26
The ALU and control unit of most of the microcomputers are combined and manufactured on a single silicon chip. What is it called?
Options
- Mono chip
- Microprocessor
- ALU
- Control unit
Question No. 27
When the RET instruction at the end of subroutine is executed,
Options
- The information where the stack is initialized is transferred to the stack pointer
- The memory address of the RET instruction is transferred to the program counter
- Two data bytes stored in the top two locations of the stack are transferred to the program counter
- Two data bytes stored in the top two locations of the stack are transferred to the stack pointer
Question No. 28
A micro program is sequencer perform the operation--
Options
- Read
- Write
- Execute
- Read and write
- Read and execute
Question No. 29
Interrupts which are initiated by an I/O drive are--
Options
- Internal
- External
- Software
- All of above
Question No. 30
A 32-bit processor has--
Options
- 32 registers
- 32 I/O devices
- 32 Mb of RAM
- 32-bit bus or 32-bit registers
Question No. 31
Clock speed is measured in--
Options
- Bits per second
- Baud
- Bytes
- Hertz
Question No. 32 Marks - 10
A parity bit is--
Options
- Used to indicate uppercase letters
- Used to detect errors
- Is the first bit in a byte?
- Is the last bit in a byte?
Question No. 33
On-chip cache has--
Options
- Lower access time than RAM
- Larger capacity than off chip Cache
- Its own data bus
- Become obsolete
Question No. 34
The system bus is made up of--
Options
- Data bus
- Data bus and address bus
- Data bus and control bus
- Data bus, control bus and address bus
Question No. 35
Modern processor chips may be classified as--
Options
- LSI
- ULSI
- MIPS
- SSI
Question No. 36
A nanosecond is--
Options
- 10-6 sec
- 10-3 sec
- 10-12 sec
- 10-9 sec
Question No. 37
The clock speed of a modern PC is of the order of--
Options
- 400 KHz
- 400 Hz
- 400 MHz
- 400 Ghz
Question No. 38
An OR gate generates a low output when--
Options
- Any one of its inputs is low
- All of its inputs are high
- When all of its inputs are low
- Power fails
Question No. 39
The ascending order or a data Hierarchy is--
Options
- bit - bytes - fields - record - file - database
- bit - bytes - record - field - file - database
- bytes - bit- field - record - file - database
- bytes -bit - record - field - file – database
Question No. 40
A conditional jump instruction-
Options
- Always cause a transfer of control
- Always involves the use of the status register
- Always modifies the program counter
- Always involves testing the Zero flag