What is a bus in computer science?

A bus is a high-speed internal connection. Buses are used to send control signals and data between the processor and other components. Three types of bus are used. Address bus – carries memory addresses from the processor to other components such as primary storage and input/output devices.

What two components make up the central processing unit in a von Neumann machine?

In a von Neumann architecture, the devices that store information and the devices that process information are the same. The control unit and the arithmetic/logic unit are both part of the central processing unit ( CPU ).

Which of the following manages the fetch execute cycle?

The control unit manages the fetch – execute cycle. 12. True or False?

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What means that each memory location can be accessed directly?

RAM stores information temporarily and permits each computer byte of memory to be accessed directly. A bus is a group of wires through which data travels within a computer.

What is bus speed?

Bus speed usually refers to the speed of the front side bus (FSB), which connects the CPU to the northbridge. FSB speeds can range from 66 MHz to over 800 MHz. Since the CPU reaches the memory controller though the northbridge, FSB speed can dramatically affect a computer’s performance.

What is full form of bus in computer?

In computer architecture, a bus (shortened form of the Latin omnibus, and historically also called data highway) 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.)

What are the four basic components of a von Neumann computer?

A Von Neumann machine has four main systems to it: a memory, some way to do input/output, an arithmetic/logic unit, and a control unit.

What are the three key concepts of von Neumann architecture?

Von Neumann architecture is composed of three distinct components (or sub-systems): a central processing unit (CPU), memory, and input/output (I/O) interfaces.

What are the components of von Neumann machine?

Von Neumann computer systems contain three main building blocks:

  • the central processing unit (CPU),
  • memory,
  • and input/output devices (I/O).

What is importance of decoding phase of machine cycle?

The decoding process uses the instruction register contents to decode the type of operation which needs to be applied to instruction and inform ALU (Arithmetic logic unit) so that it can be executed for the decoded operand.

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What are the steps involved in the fetch-decode-execute cycle?

Summary of the fetch – decode – execute cycle

  • The processor checks the program counter to see which instruction to run next.
  • The program counter gives an address value in the memory of where the next instruction is.
  • The processor fetches the instruction value from this memory location.

What are the three basic steps in the instruction execution cycle?

It is composed of three main stages: the fetch stage, the decode stage, and the execute stage.

What is a 32-bit address?

A 32 – bit address is the address of a single byte. Thirty-two wires of the bus contain an address (there are many more bus wires for timing and control). Sometimes people talk about addresses like 0x2000, which looks like a pattern of just 16 bits.

How many memory locations are there in basic computer?

In practice, the CPU supported 20,000 memory locations, and up to two optional external memory units could be added, each supporting 20,000 addresses, for a total of 60,000 (00000–59999).

How do I find my memory address?

How to Calculate a Memory Address

  1. Take your 16-bit segment and offset addresses and break them into pairs.
  2. Add the two 20-bit addresses together in binary form to get the hexadecimal address of the memory.
  3. Convert the hexadecimal 20-bit physical address into binary format by breaking each of the hexadecimal digits into its own binary form.

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