text: 1. : The main circuit board containing the vital components of a PC such as the processor & the RAM. - A circuit board or "logic board" inside the computer that contains the central processing unit (CPU), microprocessor support chips, RAM, and slots for adding expansion boards such as audio, scanner, SCSI, and video boards. Multimedia chips such as DSP audio and video chips will increasingly be put on the motherboard rather than on expansion boards. \n\n\n2. CPU: Central Processing Unit that encompasses a computer's RAM, processing, and control circuitry, including the arithmetic-logic (ALU) unit. Both the ALU and the control units are wholly contained on the microprocessing chip whereas the primary storage is on the mother board or the expansion bus.\n\n3. Hard Drive: The hardware which performs the basic operations on the hard disk - including rotating the disk & reading/writing data to the disk. \n\n4. Monitor: The Monitor is used to display the images which are generated by a PC'sVideo Adaptor . \n\n5. Keyboard: The Keyboard is the main device that we use for entering data into a PC or giving it an instruction to do something specific. The key arrangements resemble that of a traditional typewriter plus lots more additional keys for specific functions.