hardware

Question 1

Von neuman architecture

Answer 1

concept that a computer would hold programs and data, consits of CPU storage input output

Question 2

CPU

Answer 2

processing unit

Question 3

register

Answer 3

internal memory location within the cpu that holds data.

Question 4

ALU

Answer 4

arithmetic and logic unit

carries out calculations on data. logic part carries out comparisons.

Question 5

accumulator

Answer 5

register used for arithmetic and logic

Question 6

Control unit

Answer 6

internal part of the CPU
controls flow of data
controls interactions

Question 7

CIR

current instruction register

Answer 7

contains the current instruction being proccesed

Question 8

PC

Answer 8

this register contains the adress for the next instruction

Question 9

Immediate access storage

Answer 9

memory found inside a CPU - used to hold data, instructions. CPU memory

Question 10

cache memory

Answer 10

portion of memory for high speed storage

Question 11

Memory unit

Answer 11

made up of a number of partitions. partition - consits of an adress and its contents. unique identificatiion

Question 12

MAR

Answer 12

stores memory address from which data will be fetched. holds memory location of data that needs to be accesed

Question 13

MDR

Answer 13

register that contains data to be stored.

Question 14

address BUs

Answer 14

carries signals relating to addresses between processor and memory. uni directional

Question 15

Data bus

Answer 15

sends data between processor and the memory unit and the input/ output devices. BI - directional

Question 16

control bus

Answer 16

carrries a signal releating to the control and coordination of activities. Both UNI and BI directional due to internal connections

Question 17

FETCH DECODE EXCECUTE

Answer 17

1. The PC address of the next instruction
2. The address copied to the MAR via address bus.
3. The instruction is copied from memory location contained in the MAR and is placed in the MDR.
4. The entire instruction is then copied from the MDR and placed in the CIR
5. The value in the PC is then incremented so that it points to the next instruction
6. The address part of the instruction is placed in the MAR
7. The instruction is finally decoded and is then executed.