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How many computers are there in schools and libraries? Number of computers in San Diego County schools Total number of instructional computers in San Diego County Schools: 43,300 Number of computers in San Diego City Schools Total Number of Instructional computer in San Diego City Schools: 15,721 Number of computers in San Diego Public Library Total number of computers available for public use in the San Diego Public Library: 464 Total number of computers connected to the Internet in the San Diego Public Library: 272 (Sources: QED State School Guides. 20th Edition. California; San Diego Public Library, 2002)
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on electricity using a power supply.It contains a central chip in the motherboard inside the CPU.
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Response from:
Leena Daniel, Registered Member on
Ammas.com
Source:
This information comes from my own knowledge.
The different components of a computer work together to produce a picture on your screen, run programs, allow you to type, move the mouse about and surf the Internet, plus much more. The main parts of the computer are: Processor (CPU) – This is also called the Central Processing Unit. This component processes all the information on a computer and tells it where to go, and what to do. This is the brain of the computer. Hard Drive (HDD) - This stores data for the computer to use when needed. All your files and the operating system are stored here. The capacity of hard disk drives is given by manufacturers in megabytes (1 MB = 1,000,000 bytes), gigabytes (1 GB = 1,000,000,000 bytes) or terabytes (1 TB = 1,000,000,000,000 bytes Random Access Memory (RAM) - This is where data is stored when the computer is turned on, the operating system and any other programs you open are stored here, and deleted when the computer is turned off. Graphics Processor Unit (GPU) - This processes the signals from the HDD, RAM and CPU to make a picture appear on your computer screen. Motherboard (MOBO) - All the components fit onto the MOBO and it brings them all together to form a computer. Information travels from component to component through the MOBO. A typical desktop computer has its microprocessor, main memory, and other essential components connected to the motherboard. Other components such as external storage, controllers for video display and sound, and peripheral devices may be attached to the motherboard as plug-in cards or via cables, although in modern computers it is increasingly common to integrate some of these peripherals into the motherboard itself. When the computer is turned on the Operating System is taken from the Hard Drive, processed by the CPU and sent to the RAM for you to use. When you click on a program, the CPU searches the HDD for the program and then processes it and transfers it to RAM. Files are stored on the Hard Drive, and they are stored in the RAM(Random Access Memory) when they are open ,so that the computer can access them quicker.
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