Data bus is bidirectional because data flow in both directions , from microprocessor to memory or Input/Output devices and from memory or Input/Output devices to microprocessor.
What is the direction of control bus?
The control bus is bidirectional and assists the CPU in synchronizing control signals to internal devices and external components. It is comprised of interrupt lines, byte enable lines, read/write signals and status lines.
Which bus is an directional?
The address bus is unidirectional . Data bus – carries the data between the processor and other components. The data bus is bidirectional . Control bus – carries control signals from the processor to other components.
What direction is the address bus?
So the address bus is uni-directional: from the CPU to the MEMORY . The information itself goes in both directions. In a READ it goes from the memory to the CPU, and in a WRITE it goes from the CPU to the memory. Hence, the data bus is bi-directional.
Is the data bus unidirectional or bidirectional and why?
Data bus is Bidirectional because the Microprocessor can read data from memory or write data to the memory . A control bus by definition is bi-directional.
What is the direction of control?
Direction is someone making a person do is/her work in a certain way by providing them with instructions, guidance or advice as to how the work must be done. Someone providing direction will often coordinate the how the work is done , as it is being undertaken.
What is bus signal?
(1) A bus is a network topology or circuit arrangement in which all devices are attached to a line directly and all signals pass through each of the devices. Each device has a unique identity and can recognize those signals intended for it.
Is accumulator a special purpose register?
Special Purpose Registers. (a) Register A(Accumulator) – Register A is an 8-bit register used in 8085 to perform arithmetic, logical , I/O & LOAD/STORE operations. Register A is quite often called as an Accumulator. ... And the result of the arithmetic operation will be stored or accumulated in this register.
Is data bus unidirectional?
Data bus is Bidirectional because the Microprocessor can read data from memory or write data to the memory. Normally Control bus is unidirectional .
Which register pair is used to indicate memory?
H and L register pair is used to act as memory pointer and it holds 16 bit address of memory location.
What is called address bus?
: an element in a computer CPU that transmits the location of stored information The address bus allows the CPU to send the address to RAM , and the data bus allows the actual data transfer to the CPU. The term bus itself refers to the connection between the two devices that allows them to communicate.—
What is purpose of address bus?
The sole purpose of an address bus is to identify the address of the location in cache or main memory that is to be read from or written to . Each location in memory will have its own unique address, this is known as addressability.
What does a 64 bit address bus mean?
An address bus is measured by the amount of memory a system can retrieve . ... Newer computers using a 64-bit address bus with a supporting operating system can address 16 exbibytes of memory locations, which is virtually unlimited.
Why is data bus bidirectional?
Data bus –
Data bus is bidirectional because data flow in both directions, from microprocessor to memory or Input/Output devices and from memory or Input/Output devices to microprocessor.
Which one of the following is an example of bidirectional?
Detailed Solution. TRIAC allows the current in both directions and thus it is bidirectional. SCR, GTO (Gate Turnoff Thyristor) and BJT allow the current in only one direction.
What do you mean by bidirectional data bus?
[‚bī·də′rek·shən·əl ′dad·ə ‚bəs] (computer science) A channel over which data can be transmitted in either direction within a computer system .
