1. Introduction to computer science Lec2 cs111

4. Extended Binary Coded Decimal Interchange Code (EBCDIC) is an 8- bit character encoding used mainly on IBM mainframe bitcharacter encodingIBM mainframe Extended Binary Coded Decimal Interchange Code (EBCDIC) is an 8- bit character encoding used mainly on IBM mainframe bitcharacter encodingIBM mainframe Unicode: A standard for representing characters as integers. Unlike ASCII, which uses 7 bits for each character, Unicode uses 16 bits, which means that it can represent more than 65,000 unique characters

5. The American Standard Code for Information Interchange ( ASCII ) is a character-encoding scheme originally based on the English alphabet that encodes 128 specified characters - the numbers 0-9, the letters a-z and A-Z, some basic punctuation symbols, some control codes that originated with Teletype machines, and a blank space - into the 7-bit binary integers. The basic ASCII set uses 7 bits for each character, giving it a total of 128 unique symbols. The extended ASCII character set uses 8 bits, which gives it an additional 128 characters. Unicode : A standard for representing characters as integers. Unlike ASCII, which uses 7 bits for each character, Unicode uses 16 bits, which means that it can represent more than 65,000 unique characters Extended Binary Coded Decimal Interchange Code (EBCDIC) is an 8-bit character encoding used mainly on IBM mainframebitcharacter encodingIBM mainframe Extended Binary Coded Decimal Interchange Code (EBCDIC) is an 8-bit character encoding used mainly on IBM mainframebitcharacter encodingIBM mainframe UTF-8 like ascii uses 8 bits for encoding characters, but It was designed for backward compatibility and to work with legacy systems

7. ASCII Codes

8. Extended ASCII Codes

11. Integrated circuit referred to as an IC, a chip, or a microchip) is a set of electronic circuits on one small plate ("chip") of semiconductor material, normally silicon. ICs can be made very compact, having up to several billion transistors and other electronic components The width of each conducting line in a circuit can be made smaller and smaller as the technology advances; in 2008 it dropped below 100 nanometer,[1] and now it is tens of nanometers.