Why microprocessor pins are multiplexed?
8085: The main reason of multiplexing address and data bus is to reduce the number of pins for address and data and dedicate those pins for other several functions of microprocessor. These multiplexed set of lines used to carry the lower order 8 bit address as well as data bus. So how Does It Reduces Number Of Pins?
What is multiplexing in microprocessor?
Definition. A multiplexer is a system of multiple inputs and just one output to receive signals coming from multiple acquisition networks. The device transfers all input signals to a microprocessor, which receives and processes the data, transmits it to the output devices, and controls the system as a whole.
Why buses are multiplexed?
In the place of making data bus separate, 8085 uses low order address bus shared with data bus by method of multiplexing. This is done to reduce number of pins. So, AD0-AD7 are address and data bus at different time.
Why address bus and data bus are multiplexed in 8086?
This address space is addressed by means of internal memory “segmentation”. The data bus is multiplexed with the address bus in order to fit all of the control lines into a standard 40-pin dual in-line package. It provides a 16-bit I/O address bus, supporting 64 KB of separate I/O space.
What is the function of a microprocessor?
A microprocessor is a computer processor wherein the data processing logic and control is included on a single integrated circuit, or a small number of integrated circuits. The microprocessor contains the arithmetic, logic, and control circuitry required to perform the functions of a computer’s central processing unit.
Where are microprocessor used?
Some industrial items which use microprocessors technology include: cars, boats, planes, trucks, heavy machinery, elevators, gasoline pumps, credit-card processing units, traffic control devices, computer servers, most high tech medical devices, surveillance systems, security systems, and even some doors with automatic …