02-09-2017, 04:15 PM
A computer system has three main components: hardware, software and people. The equipment associated with a computer system is called hardware. The software is a set of instructions that tells the hardware what to do. People, however, are the most important component of a computer system: people use the power of the computer for some purpose. In fact, this course will show you that the computer can be a tool for almost anyone, from a business person, to an artist, to a housekeeper, to a student - an incredibly powerful and flexible tool.
The software is actually a computer program. To be more specific, a program is a set of step-by-step instructions that directs the team to perform the tasks you want them to perform and to produce the results you want. A computer programmer is a person who writes programs. Most of us do not write programs, we use programs written by someone else. This means that we are users - people who buy and use computer software.
A computer is a device that can be instructed to carry out arbitrary sequences of arithmetic or logic operations automatically. The ability of computers to follow generalized sets of operations, called programs, allows them to perform a wide range of tasks.
Such computers are used as control systems for a wide variety of industrial and consumer devices. This includes simple, special-purpose devices such as microwave ovens and remote controls, factory devices such as industrial robots and computer-aided design, but also on general-purpose devices such as personal computers and mobile devices such as smartphones. The Internet runs on computers and connects millions of other computers.
Since ancient times, simple hand-held devices such as the abacus have helped people to make calculations. At the beginning of the Industrial Revolution, some mechanical devices were built to automate tedious and long tasks, such as guide patterns for looms. More sophisticated electrical machines made specialized analog calculations at the beginning of the 20th century. The first digital electronic calculators were developed during World War II. The speed, power, and versatility of computers have increased steadily and dramatically ever since.
Conventionally, a modern computer comprises at least one processing element, typically a central processing unit (CPU), and some form of memory. The process element performs arithmetic and logic operations, and a sequencing and control unit can change the order of operations in response to the stored information. Peripheral devices include input devices (keyboards, mice, joystick, etc.), output devices (monitor screens, printers, etc.) and input / output devices that perform both functions (for example, was 2000). Peripheral devices allow you to retrieve information from an external source and save and retrieve the result of operations.
The software is actually a computer program. To be more specific, a program is a set of step-by-step instructions that directs the team to perform the tasks you want them to perform and to produce the results you want. A computer programmer is a person who writes programs. Most of us do not write programs, we use programs written by someone else. This means that we are users - people who buy and use computer software.
A computer is a device that can be instructed to carry out arbitrary sequences of arithmetic or logic operations automatically. The ability of computers to follow generalized sets of operations, called programs, allows them to perform a wide range of tasks.
Such computers are used as control systems for a wide variety of industrial and consumer devices. This includes simple, special-purpose devices such as microwave ovens and remote controls, factory devices such as industrial robots and computer-aided design, but also on general-purpose devices such as personal computers and mobile devices such as smartphones. The Internet runs on computers and connects millions of other computers.
Since ancient times, simple hand-held devices such as the abacus have helped people to make calculations. At the beginning of the Industrial Revolution, some mechanical devices were built to automate tedious and long tasks, such as guide patterns for looms. More sophisticated electrical machines made specialized analog calculations at the beginning of the 20th century. The first digital electronic calculators were developed during World War II. The speed, power, and versatility of computers have increased steadily and dramatically ever since.
Conventionally, a modern computer comprises at least one processing element, typically a central processing unit (CPU), and some form of memory. The process element performs arithmetic and logic operations, and a sequencing and control unit can change the order of operations in response to the stored information. Peripheral devices include input devices (keyboards, mice, joystick, etc.), output devices (monitor screens, printers, etc.) and input / output devices that perform both functions (for example, was 2000). Peripheral devices allow you to retrieve information from an external source and save and retrieve the result of operations.