Personal Computer Components

 

Computers differ greatly in their internal organization, but every digital computer has a processor and internal/external memory. All units of the computer system are linked by a bus. (See Figure 2) The bus is a flat cable with numerous parallel wires. Each wire can move one bit, so the bus can transmit many bits along the cable at a time. For example, a 16-bit bus, with 16 parallel wires, allows the simultaneous transmission of 16 bits (2 bytes) of information from one component to another.

Figure 2