Lab1 Essay

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Memory Memory Input Input Output Output Accumulator Accumulator Arithmetic Logic Unit Arithmetic Logic Unit Control Unit Control Unit Memory- Store program instructions and data. Control Unit- Control operations between all components of the computer. Arithmetic Logic Unit- Perform calculations using the accumulator. Accumulator- Stores the result of the last calculation. Accumulators are registers that store temporary numbers and can be hard-wired to the logic unit. They were developed so that fewer bits could be used. Input- Provide data to the computer from the user. Output- Display data to the user. 1 An Xbox 360 and a PlayStation 3 are two examples of input, output, and memory devices found in a computer. A DVD player is an example of a device that has both input and output. Similarities | Differences | Functionality: Both types of computers provide the same functionality, including expansion ports, CD/DVD drives, keyboards, mouse, audio output, and video display. | Power Source: The desktop contains a power supply that draws power from a wall outlet and may provide hundreds of watts of power to the system. The notebook relies on a rechargeable battery for power when not plugged in, which provides a lower power than that of the desktop | Software: Both types of computers can run the same operating systems and application programs. | Size: The desktop computer sits on a desk and is hard and heavy to move around. The notebook can sit on a table or on your lap. It is portable and easy to move around. | Power Saving: Both computers can run the same operating systems and application programs. | Components: The internal components of a desktop computer are not designed for low power operation. This includes the CPU, which is equipped with a large heat sink fan. A notebook computer contains low-power components. |

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