computer hardware, electronic components, consumer electronics  

Manufacturers : Computers

A computer is an electronic device that stores, retrieves, and processes data, and can be programmed with instructions. Personal computers are designed primarily to provide independent computing power to a single user, and can usually be defined as a desktop computers, floor-standing computers, or portable computers (notebook or laptop computers, personal digital assistants). A typical computer system is basically built with a motherboard, interface cards and peripherals. The motherboard is the base of the computer system. Computer systems including personal computers, workstations, servers, and embedded systems typically include a motherboard on which most of the fixed internal processing circuitry of the computer is mounted. The motherboard usually contains a controller chip set, several slots for installing the interface cards (such as sound cards, graphics cards), a central processing unit (CPU, or host processor) and several memory module slots for accommodating the memory modules. A computer  has a non-volatile mass storage system for storing a predetermined program for the CPU. This mass storage system may be random access memory (RAM), read only memory (ROM), flash memory, hard disk drive, USB flash drives, optical media, or other data storage systems. The program stored in the storage system includes the basic input/output system (BIOS), and optionally a disk operating system (DOS) and application software. Input/output (I/O) devices or peripherals, such as video monitor, keyboard, mouse, microphone, digital camera, scanner, and printer are connected by means of cables that plug into connectors. A network is a collection of interconnected devices, which allow computer users to communicate, collaborate, and share resources. The Internet is a global system of interconnected networks that runs the Internet Protocol (IP) to transfer data. Common types of network devices include modems, firewalls, routers, bridges, switches, gateways, and hubs.

Lamps, light bulbs, lighting fixtures

2009 Electronics manufacturers directory • (Computers section) • Site map