IT 104 Lecture Notes - Lecture 2: Arithmetic Logic Unit, Central Processing Unit, Address Bus
31 Oct 2017
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Document Summary
8 bits are grouped together and become 1 byte. 8 bits (1 byte) can represent 256 different characters. Hardware: something tangible and physical- it can be seen, touched and held. Each 0 or 1 is known as a bit (binary digit) Ascii= american standard code for information interchange. 2 main components: processor (cpu) and main memory (ram) ~arithmetic logic unit (alu)- mathematical and logical operations. ~stabilizes the machine and devices on the motherboard so the operating systems can be loaded and take control computer. Expansion card fits into expansion slots to provide additional functionality for the. Peripheral component interconnect (pci) bus: high speed slot; replaces isa. Accelerated graphics port (agp): high speed port for attaching a graphics card to a. ~some offer additional functions such as video capturing and tv tuning. Ports: connectors to which devices can be attached. Usb port: extension of the external bus. Hot-swapped: connect or disconnect without powering down or rebooting.
