Froggy Jumps Computer Essentials 1Online version Exercise by ENGLISHEERING ... 1 the brain of the computer a CPU = central processing unit b hardware c hard drive 2 physical parts that make up a computer system a hard drive b peripherals c hardware 3 programs which can be used on a particular computer system a software b input c main memory 4 magnetic device used to store information a main memory b hard drive / hard disc c CPU = central processing unit 5 results produced by a computer a software b input c output 6 input devices attached to the CPU a hardware b ports c peripherals 7 the information which is presented to the computer a input b port c output 8 sockets into which an external device may be connected a ports b peripherals c hardware