CPU

Keywords

CPU
Control unit
ALU-arithmetic and logic unit
Fetch-execute
Hertz
Bus
Cache data


The CPU has two boxes. ROM- read only memory and RAM-Random access memory. ROM contains instructions on what to do, RAM contains whatever you want the CPU to do. When you input a message to the CPU, the CPU reads it and puts it into the RAM. It then looks in the ROM box to find out how to complete the task. It does the task and outputs it. It then does all this again and again and again...
          This seems like the CPU is slow and stupid but what makes the CPU seem clever is the lightning fast speed it operates so as soon as you put in an input, out comes the output.