systems architecture

Question 1

CPU’s cycle and what happens at each stage

Answer 1

fetch - copy memory address to MAR and copies the instruction from there to MDR
decode - instruction is decoded
execute - instruction is preformed such as a calculation (using ALU)

Question 2

CPU 3 main parts

Answer 2

CU - overall control of cpu (f,e,d)
ALU - does calculations and logic operations
cache - very fast memory and stores regularly used data so CPU can access quickly

Question 3

what are embedded systems and examples

Answer 3

computers built into other devices eg dishwasher, tv, microwaves
often used as control systems
dedicated to a single task, cheaper to produce and more efficiant

Question 4

clock speed meaning

Answer 4

number of instructions a single processor core can carry out per second (Hz)

Question 5

what does a more number of cores mean

Answer 5

more instructions can be carried out at once

Question 6

cache size meaning

Answer 6

data storage inside the cpu thats faster than RAM and a larger cpu cache gives cpu faster access to more data to process