CPU & Memory - Questions

True/False

1. An Intel Chip is used in an IBM (or Compatible) 80386 Computer

2. ALU does comparisons, addition, subtraction, multiplication and division, fixed and floating point arithmetic when requested by CPU.

3. That part of the CPU which matches a machine language instruction with a set of prestored instructions and when a match is found, processes it, is called the Instruction Pointer

4. CPU Clock Speed is measured in BPS (Bits per second)

Multi-choice

1. The Control Processor.

a. interconnects the ALU, CPU, memory etc with each taking turns at using the bus to transfer data.

b. inputs or outputs data via a device in a suitable form for that device.,

c. matches a machine language instruction with a set of prestored instructions and when a match is found, processes it.

d. directs the step-by-step operation of the entire computing system.

2. The Instruction Register/decoder

a. interconnects the ALU, CPU, memory etc with each taking turns at using the bus to transfer data.

b. inputs or outputs data via a device in a suitable form for that device.,

c. matches a machine language instruction with a set of prestored instructions and when a match is found, processes it.

d. directs the step-by-step operation of the entire computing system.

3. The I/O Bus;

a. interconnects the ALU, CPU, memory etc with each taking turns at using the bus to transfer data.

b. inputs or outputs data via a device in a suitable form for that device.,

c. matches a machine language instruction with a set of prestored instructions and when a match is found, processes it.

d. directs the step-by-step operation of the entire computing system.

4. The I/O Processor.

a. interconnects the ALU, CPU, memory etc with each taking turns at using the bus to transfer data.

b. inputs or outputs data via a device in a suitable form for that device.,

c. matches a machine language instruction with a set of prestored instructions and when a match is found, processes it.

d. directs the step-by-step operation of the entire computing system.

Short Answers

1. Describe the functions of the following Central Processing Unit components

a. Arithmetic and logic unit

b. Instruction Processor

c. Read only Memory

d. Random Access Memory

e. Cache Memory

f. I/O Bus

g. Main (Control) Processor

2. You have been offered two PC's for your use (both are loaded with identical software and include MS-DOS and Microsoft Works).

PC1: 80486SX, 4MB RAM, 80 MB Hard Disk, Laser Printer

PC2: 80386DX, 8Mb RAM, 160 MB Hard Disk, Dot Matrix Printer.

Explain the difference between the 80386DX CPU and the 80486SX CPU..

Sample Answers

True/False

1.T

2.T

3.F

4.F

Multichoice

1. d The Control Processor

2. c The Instruction Register/decoder

3. a The I/O Bus

4. b The I/O Processor

Short Answers

1.Central Processing Unit components

a. Arithmetic and logic unit

b. Instruction Processor

c. Read only Memory

d. Random Access Memory

e. Cache Memory

f. I/O Bus

g. Main (Control) Processor

2.Chip Differences. Fundamentally the same chip (ie. the 80386DX chip), the 80486 chip has the addition of 8K cache memory and improved memory management.