Bài giảng Computer - Chapter 02

Tài liệu Bài giảng Computer - Chapter 02: Chapter Overview Computer CommunicationThe Computer Bus 1Early Forms of Communication All out-of-earshot communications require some form of code.Morse code uses two states—dots and dashes—for letters. 2BitByte NibbleWordKilobyte (KB) Megabyte (MB) Gigabyte (GB) The Binary Language of Computers 3The Binary System 0 = Off1 = On 4Examples of Binary Notation5 Parallel and Serial Devices 6American Standard Code for Information Interchange (ASCII) Standard for representing text characters in binary codeBasic standard = 128 codesExtended character set = 256 codes 7Electronic Bus 8Bus System 9Chapter Summary Computers communicate using binary notation, or base 2 math.ASCII is the standard communication code for most modern computers.ASCII includes a basic standard and an extended character set.Serial devices transmit one bit at a time; parallel devices can transmit multiple bits at once.A bus can carry at least 8 bits from one point to another. 10...