A computer system comprises hardware and software components, aiming to offer a powerful computational tool. These systems play a crucial role across diverse domains, aiding us in numerous tasks. The prevalence of the internet has significantly bolstered the utilization of computers for information sharing and communication. Computer systems empower us to store, process, display, and transmit information. Even in a basic modern computer system, multiple programs are typically required to carry out various functions effectively.

Monday, July 15, 2013

Characteristics of computer: Speed

Computer performs both simple and complex operations, with speed and accuracy. It can work at enormously high speed.

The total time needed to execute application programs is the most important measure of computer system performance.

It executes a variety of instruction. It can add and subtract numbers compare of letters to determine alphabetic sequence move, copy numbers and letters.

Computer operations for example, execution of an instruction are measured in millisecond, nanoseconds and picoseconds (one thousandth, one millionth, one billionth and one trillionth of a second respectively).

High speed computer can perform 3 to 4 million simple arithmetic operations per second. The processing speed is based on its ‘cycle time’.

The average desktop computer‘s cycle time is 900 - 1000 nanoseconds. It means that in one nanosecond the computer can perform 900-1000 operations.

The speed of computers system depends on various factors, including:
*Hardware
*Programming language
*Pipelining
*Parallelism
*Memory
*Compatibility
Characteristics of computer: Speed

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