CENTRAL PROCESSING UNIT (CPU)
The Central Processing Unit (CPU) controls the operation of the computer. It interprets and carries out the basic instructions that operate a computer. The processor significantly impacts overall computing power and manages most of a computer's operations.
On larger computers such as mainframes and supercomputers, the various functions performed by the processor extend over many separate chips and often multiple circuit boards. On personal computer, all functions of the processor usually are on a single chip. Some computers and chip manufacturers use the term microprocessor to refer to a personal computer processor chip.
EXPANSION SLOTS
Expansion slots are the sockets where the circuit boards or the adapter cards can be inserted into the motherboard. In computers, a slot or expansion slot, is an engineered technique for adding capability to a computer in the form of connection pinholes (typically in the range of 16 to 64 closely-spaced holes).
It is a place to fit an expansion card containing the circuitry that provides some specialised capability, such as video acceleration, sound or disk drive control.
A Peripheral Component Interconnect (PCI) bus is a high speed expansion bus that connects high speed devices.
An Industry-Standard Architecture (ISA) expansion slot is a slot in a computer where ISA accessories can be added to.
EXPANSION CARDS
An expansion card is plugged into an expansion slot. It is used to add new devices or capabilities to a computer.
An expansion card is a circuitry designed to provide expanded capability to a computer. It is provided on the surface of a standard-sized rigid material (fiberboard) and then plugged into one of the computer's expansion slots in its motherboard (backplane).
Cards may come in one of two sizes designed to match standard slot dimensions. Cards may come in one of two sizes designed to match standard slot dimensions.
RAM SLOT
The slot where the computer memory, also called as RAM is placed on the computer’s motherboard.
PORTS AND CONNECTORS
A port is the point at which a peripheral attaches to a system unit so that the peripheral can send data to or receive information from the computer.
An external device, such as a keyboard, monitor, printer, mouse and microphone is often attached by a cable to a port on the system unit.
The back of the system unit contains so many ports. Some newer personal computers also have ports on the front of the system unit.
Ports have different types of connectors. A connector joins a cable to a
peripheral. One end of a cable attaches to the connector on the system unit and the other end of the cable attaches to a connector on the peripheral.
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