Internal hardware components Flashcards
What is the CPU responsible for?
CPU, which is a single chip responsible for all the processing
What is the computer Hardware?
The physical components of the computer system, which includes digital circuitry.
The processing hardware is necessary to gain a useable output from the system.
What is the back store?
Normally a hard disk, which retains the data written on to it after the computer system has been switched off; it could include other storage devices such as flash memory and removable disks
What are input devices?
Typically includes a mouse, keyboard and microphone.
What are output devices?
System output can be printed out by the user or displayed on a computer screen.
What is the power supply?
Used to convert alternating current (AC) into low-voltage direct current (DC) to supply power to the internal components within the computer system.
What activities is the processor responsible for?
- Sorting and searching data
- Logical decision making
- Performing calculations
- Control of input, output and storage devices
What is the bus system?
The bus system is composed of the communication links which connect the various parts of a computer.
What are the three types of buses? And the order they are in?
- Control Bus
- Address Bus
- Data Bus
What is Main memory?
Main memory stores program instructions and data that are processed by the processor.
What is the Address Bus?
Address bus specifies a physical address in main memory and the value that is to be read or written into that address is communicated via the data bus.
What is the control bus?
Control bus manages data processing; for example,
sends a signal to either write from the data bus to a memory address or a signal to read data from a memory address.
What are the Inputs and Outputs?
Input and output – control signals received from the processor include input (read) or output (write) requests. These control signals are then used to connect a system bus to specific I/O devices; typical I/O devices would be inputs from keyboard and mouse with outputs to monitor and printer
What is the Vann Neuman stored Concept?
- The Van Neumann stored program architecture is based on both data and instructions stored in a single memory space.
- Data and instructions are transmitted through a shared data bus.
- Van Neumann architecture is used extensively in general purpose computing systems.
What is the Harvard Architecture?
The Harvard architecture is based on the program data and instructions being stored in separate memories; instructions are fetched from instruction memory serially and data is fetched when needed by an instruction.
