computing mind map 2

computing mind map 2

1. Hardware and software of a computer

   • The hardware of a computer refers to the physical components of the computer, e.g. keyboard, mouse and hard drive
     • Software of computer are the things that are physically there so like applications and operating systems for example games or a word processor
     • CPU-input and output, Keyboard-input, Mouse-input, Printer-output,

2. CPU

   • There are two typical components of a CPU are the arithmetic logic unit (ALU), which performs arithmetic and logical operations, and the control unit (CU), which extracts instructions from memory and decodes and executes them, calling on the ALU when necessary.
   • The clock rate is an internal clock that measures the speed that information is processed at
   • Cache is a component that stores data without you being aware so when it is needed later it is easier to access

3. bit-0 or 1, nibble-4 bits, byte- 8 bits kilobyte-1024 bytes megabyte-1,000,000 bytes gigabyte- 1,000,000,000 bytes terabyte-1000000000000bytes

4. It is always easier to represent binary numbers as hexidecimal