1.1 System Architecture Flashcards
what is the purpose of the CPU ?
to fetch, decode and execute instructions/ process data
what is a register ?
it is where short term data is held like addresses or data this is currently being worked on
what are some of the registers ?
memory address (stores address of next instruction), memory data (stores data to be sent to main memory), accumulator (stores the value from the last calculation)
what is the cache ?
used to hold the frequently used instructions and data that is built onto the cpu which provides a faster access than ram
what is an embedded system ?
it is a computer system built into another device which provided a specific function that is cheaper and has no unnecessary fractures
what are some examples of an embedded system ?
dishwasher, washing machine, mobile phone, sat nav
what is the purpose of the control unit ?
it controls the flow of data within the cpu, controls the input and output of data to the cpu, controls the timing signals sent within the cpu
what is the purpose of the alu ?
it is the arithmetic and logic unit which is used to perform arithmetic calculations and logical operations
what is a core ?
a processing unit within a cpu
what are the three types of bus ?
address, control and data
