PC Bus-16 bit, 32 bit

PC BUS(16 Bits, 32 Bits)

Bus is a communication system that transfers data between components inside a computer, or between computers. This expression covers all related hardware components (wire, optical fiber, etc.) and software, including communication protocols.

Types of BUS:-

There are two types of buses.

1. Internal Bus

2. External Bus

1. Internal Bus:-

   The internal bus, also known as internal data bus, memory bus, system bus or Front-Side-Bus, connects all the internal components of a computer, such as CPU and memory, to the motherboard. Internal data buses are also referred to as local buses, because they are intended to connect to local devices. This bus is typically rather quick and is independent of the rest of the computer operations.

2. External Bus:-

   The external bus, or expansion bus, is made up of the electronic pathways that connect the different external devices, such as printer etc., to the computer.

Address bus:-

   An address bus is a bus that is used to specify a physical address. When a processor or DMA-enabled device needs to read or write to a memory location, it specifies that memory location on the address bus (the value to be read or written is sent on the data bus). The width of the address bus determines the amount of memory a system can address. For example, a system with a 32-bit address bus can address 232 (4,294,967,296) memory locations.

Data Bus:-

   If you want to transfer the data from one place to another then data bus will required. Without data bus transformation of data is not possible. 

Here 16 bits , 32 bits are data size.

And it can occupy

2^16, 2^32 memory location(address)