What is the CPU: The CPU (or central processing unit) is the brain of the computer
What's its purpose: its purpose is to process data.
What is the fetch/ execute cycle: It starts when the CPU fetches the data from RAM and sends it to the control unit where it is decoded into small simple instructions it is then executed in the ALU (arithmetic / logic unit) which is just logic and maths and then finally sent back to the RAM
What are the main parts of the CPU: The main parts are the control unit and ALU. the control unit breaks down long complicated instructions into short simple ones. The ALU executes the broken down orders by using simple maths and logic.
Other things you should know:
A piece of software on a computer is a long line of instructions (code)
The CPU has three main intsructions
ADD
STR (store)
CMPR (Compare)
What's its purpose: its purpose is to process data.
What is the fetch/ execute cycle: It starts when the CPU fetches the data from RAM and sends it to the control unit where it is decoded into small simple instructions it is then executed in the ALU (arithmetic / logic unit) which is just logic and maths and then finally sent back to the RAM
What are the main parts of the CPU: The main parts are the control unit and ALU. the control unit breaks down long complicated instructions into short simple ones. The ALU executes the broken down orders by using simple maths and logic.
Other things you should know:
A piece of software on a computer is a long line of instructions (code)
The CPU has three main intsructions
ADD
STR (store)
CMPR (Compare)
- The difference between ROM and RAM is that RAM is volatile (Temporary) and ROM is non volatile (permanent)
- Two examples of ROM storage is the DVD ROM and a CD ROM
- Without ROM you wouldn't be able to store any permanent data on your computer if you didn't have ROM you couldn't turn on your computer because it wouldn't know how to
- An example of storage is a hard drive in it you would find the lots of non volatile data including your OS
- The purpose of RAM is to temporarily store data on screen
- When you open a program it fetches data from your your hard drive or SSD and decodes the data in the control unit it then executes the newly decoded commands and stores them in the RAM to be displayed on screen