Why data bus and address bus are multiplexed?
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.
What is meant by multiplexed address and data bus?
and Data Bus. The multiplexed address and data bus is the bus configuration that address pins are shared with DQ signals. By using the shared pins, total pin count is reduced compared to conventional products that use a separate address and data bus configuration.
Why do we require to Demultiplex multiplex address data bus?
Multiplexing is used to reduce the number of pins of 8085, which otherwise would have been a 48 pin chip. But because of multiplexing, external hardware is required to demultiplex the lower byte address cum data bus. ALE signal is used to demultiplex the lower order address bus (AD0 – AD7).
Which bus is a bidirectional bus *?
Data bus is Bidirectional because the Microprocessor can read data from memory or write data to the memory. Normally Control bus is unidirectional.
Which one is not a system bus?
6. The set of electrical pathways which moves information between the basic components on the motherboard, including between RAM and the CPU: a….Online Test.
| 5. | Which of following is not a valid bus in computer system ? |
|---|---|
| b. | Memory Bus |
| c. | Address Bus |
| d. | System Bus |
What is primary role of system bus?
The system bus is a pathway composed of cables and connectors used to carry data between a computer microprocessor and the main memory. The bus provides a communication path for the data and control signals moving between the major components of the computer system.
What is the system bus what are its main components?
The system bus is the communication channel that connects all computer components. It physically consists of parallel transmission lines that can be grouped into those carrying memory addresses (the address bus), those carrying control and status signals (the control bus), and those carrying data (the data bus).
What is data and control signals?
A pulse or frequency of electricity or light that represents a control command as it travels over a network, a computer channel or wireless. In the data communications world, control signals typically travel the same path as the data either as separate packets or contained within the data packets.
What is the function of a register?
Registers are a type of computer memory used to quickly accept, store, and transfer data and instructions that are being used immediately by the CPU. The registers used by the CPU are often termed as Processor registers.