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Digital Electronics & Computer Oraganisation
- 1. We Also Provide SYNOPSIS AND PROJECT. Contact www.kimsharma.co.in for best and lowest cost solution or Email: amitymbaassignment@gmail.com Call: 9971223030 Q1. What are flip flop circuits in digital electronics? Discuss race around condition in J-K Flip Flop. Q2. What is virtual memory? How address mapping is done in cache memory? Elaborate your answer with examples. Q3. Design8:1 Mux for a given function, f=Σ (0, 1,5,7,9, 13) Q4. How branching takes place in Instruction pipeline. Explain with suitable e xamples Q5. Write short notes on any three of the following. a) Microprocessor b) Modes of data transfer. c) I/O processor d) Associative memory e) Software and Hardware interrupt Q6. Designa mod-15 counter. Explain the various steps in designing the counter Q7. What are shift registers? Designa 8 bit shift register with features like PISO, SISO, SIPO and PIPO. Q8. Compare RISC & CISC architecture. Case Study Q1. 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? Q2. Explain in details the block diagram of timing and control unit. 1. Where does a computer add and compare data? 2. Which of the following registers is used to keep track of address of the memory location where the next instruction is located? Question 3: A complete microcomputer system consists of
- 2. Question 4: CPU does not perform the operation Question 5: Pipelining strategy is called implement Question 6: A stack is Question 7: A stack pointer is Question 8: The branch logic that provides decision making capabilities in the control unit is known as Question 9: Interrupts which are initiated by an instruction are Question 10: A time sharing system imply 11. Processors of all computers, whether micro, mini or mainframe must have Question 12: What is the control unit's function in the CPU? Question 13: What is meant by a dedicated computer? b. which is assigned to one and only one task Question 14: The most common addressing techiniques employed by a CPU is a. immediate b. direct c. indirect d. register e. all of the above Question 15: Pipeline implement a. fetch instruction b. decode instruction c. fetch operand
- 3. d. calculate operand e. execute instruction f. all of abve Question 16: Which of the following code is used in present day computing was developed by IBM corporation? d. EBCDIC code Question 17: When a subroutine is called, the address of the instruction following the CALL instructions stored in/on the d. stack Question 18: A microprogram written as string of 0's and 1's is a d. binary microprogram Question 19: Memory access in RISC architecture is limited to instructions c. STA and LDA 20. A collection of 8 bits is called a. byte Question 21: An AND gate generates a high output when-- B All of its inputs are high Question 22: How many address lines are needed to address each memory locations in a 2048 x 4 memory chip? b. 11
- 4. 23. A computer program that converts an entire program into machine language at one time is called a/an c. compiler Question 24: In immediate addressing the operand is placed b. after OP code in the instruction Question 25: Microprocessor 8085 can address location upto c. 64K Question 26: The ALU and control unit of most of the microcomputers are combined and manufacture on a single silicon chip. What is it called? b. microprocessor Question 27: When the RET instruction at the end of subroutine is executed, c. two data bytes stored in the top two locations of the stack are transferred to the program counter Question 28: A microporgram is sequencer perform the operation e. read and execute Question 29: Interrupts which are initiated by an I/O drive are b. external 30. A 32-bit processor has D 32-bit bus or 32-bit registers 31. Clock speed is measured in— D Hertz 32. A parity bit is— B Used to detect errors 33. On-chip cache has— A Lower access time than RAM
- 5. 34. The system bus is made up of— D Data bus, control bus and address bus 35. Modern processor chips may be classified as— A LSI 36. A nanosecond is— D 10-9 sec 37. The clock speed of a modern PC is of the order of— C 400 Mhz 38. An OR gate generates a low output when— D Power fails 39. The ascending order or a data Hierarchy is— A bit - bytes - fields - record - file - database 40. A conditional jump instruction-- A Always cause a transfer of control