TAILIEUCHUNG - Introduction to Computing (8)

CSC to Computing Lecture 8 Dr. Iftikhar Azim Niaz. ianiaz@. 1Last Lecture Summary Impact Printers and Non Impact Impact Printers. q Dot Matrix. q Line Printers. q Band Impact Printer Advantages and. Non Impact Printers. q Ink jet , Laser , All-in-One Comparing Printers. 2Last Lecture Summary High Quality Printers. q Photo printer. q Thermal printer. q Dye Sublimation. q Solid Ink. q Care and Feeding of Printers. 3 Transforming Data Into .nInformation. Understands only two states either. On or Off. q Makes different patterns of 0s and Data vs How Computers Represent Data. 4How Computer Represent Number system. q Manner of Counting. q Several different number. systems To Computer everything is. a number. q Alphabets, numbers,. punctuation marks, sound,. pictures, computer. instructions. q For example. n “Here are some words.” 5Decimal Used by humans to Latin word deci mean Also called Base Have 10 distinct digits. q 10 is a two-digit Digits combine to make. larger numbers. 6Binary Number Switch has two states. q Off represents 0, On is Latin bi means Used by computers to. Two distinct digits, 0 and. 1. q 0 and 1 combine to make. represent a quantity >1. it uses two (or more). 7Data A computer circuit represents the 0 or the. 1 electronically by the presence or. absence of an electrical charge. 8Comparison Base 2 to Base 16. 9 Number Decimal to Binary and Binary to Decimal to Octal and Octal to Decimal to Hexadecimal and. Hexadecimal to Binary to Octal to Hexadecimal to Binary and Octal 10Decimal To 1. 11Decimal To (151)10 = (10010111)2. 12 Decimal to Binary (with . Fractions).n ()10 = ()2. 13Binary to Decimal. 14Binary to Decimal. 15 Binary to 11100012 = 11310. 16 Binary to Decimaln 111001111012 =. 110110102 = 21810. 17Binary to Decimal (with .Fractions).n ()2 = ()10. 18Exercise Decimal to Binary. 19Exercise Decimal to Binary. 20Decimal to 432110 = 103418. 21Decimal to Octal (Fractions).n = . 22 Octal to Decimaln 7438 = 48310 265258 = 1160510. 23Exercise Decimal to Octal. 24 Exercise Octal to Decimaln 266018 =.n 14228 =. 25Decimal to Hexadecimal. 26Decimal to Hexadecimal. 27Hexadecimal to Decimal. 28Hexadecimal to Decimal .n ()16 = ()10. 29Comparison Base 2 to Base 16. 30Binary to Hexadecimal. 31Hexadecimal to Binary

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