Hardware Devices For Computers
Hardware Devices For Computers
Computer hardware refers to the physical components of a machine, including the computer case, main processing unit (CPU), memory, motherboard, optical drive, optical cable, speaker, and computer data storage. The CPU is responsible for processing instructions from software.
The number of computer components, in turn, determines the size and power consumption of the machine. It’s important to choose the right type of device, which is designed to meet the specific needs of the software system. Hardware devices are available for computers with different operating systems. Most devices are designed for operating on Windows operating systems.
For different purposes, devices are available. Examples are printers, scanners, fax machines, cell phones, DVD players and scanners.
The technology that makes up the hardware devices is developed by the different computer manufacturers. The latest technology in computers is known as microprocessors. A microprocessor is used to implement programs and perform tasks.
A microprocessor is basically an electronic circuit with input and output registers that carry data from one function to another. For example, the microprocessor at the heart of the keyboard connects the input-output registers and processes commands, sending them to the main processing unit. A microprocessor is used to translate commands to a code that the main processing unit will follow.
A microprocessor is connected to the computer’s system board through a wire or ribbon cable. Some devices are built with the microprocessor on the motherboard. A separate circuit board is built for the microprocessor to connect to the main processor. In most cases, all microprocessors are housed on a single circuit board.
The main processing unit (CPU) is the brain of a PC, and is built on a semiconductor chip. Its purpose is to process instructions and transfer data between the microprocessor and the main processing unit.
Many processors are very powerful but consume a lot of power. They include the integrated circuits and the parallel processing units.
There are two types of integrated circuits. A fixed-function integrated circuit is designed to perform a specific task. A programmable logic device is a chip that has several input/output modules that allow for the manipulation of one or more functions. A microchip, on the other hand, is a circuit board that contains many different functional circuits. It is capable of executing multiple tasks and can be programmed to perform multiple tasks at once.
Programmable electronic devices have the capability to store programs and run them automatically when the need arises. Such devices are called “hardware” devices.
The microprocessor chip is usually embedded within the circuit board, or sometimes placed on a separate circuit board. These are often referred to as peripheral devices, because they perform one function and are not essential for the main processing unit.
Software is composed of programs and commands that tell the operating system what to do. A microprocessor helps the operating system to interpret the commands and run the software system. Programs are installed into the computer via the hard drive, or CD or other media.
The microprocessor chip can be powered by an internal battery, or by a supply of electricity. Other sources include external power and AC power. A chip or power supply can also power the microprocessor chip. External power is typically available if the computer is in use.
The main processor can be used either as a standalone device or attached to the computer through a connector. When a device is integrated into the computer, it is called a part of the system. External power can also be provided through the USB port.
The device stores all of the software programs and data and provides access to the computer’s storage media. The devices can be accessed directly or indirectly through a network interface or a serial port. There is a multitude of different types of storage media available today. Some of these storage devices can even be connected directly to a personal computer, while others can be attached to other devices.
Computer software can be stored in the form of a file, sound, video, or image. These can be transferred from one device to another. Many of these files can be viewed or played back by other devices. They can be stored in a memory card, CompactFlash card, or in a hard drive.
The most common forms of computer software are word processing, spreadsheets, database applications, desktop publishing, spreadsheets, image editing, CAD workstation, spreadsheet programs, audio, video, and game programs. These can all be obtained through the Internet and downloaded for free.