Computer Science

Data Representation What is a bit? A bit is a binary digit.The smallest increment of  data on a machine. A bit can hold only one of two values: 0 or 1. What is a Byte? Byte is an abbreviation for binary term. A single byte is composed of 8 consecutive bits capable of storing a single character. Storage Hierarchy Numbering System  Decimal System         Alphabet = {0,1,2,3,4,5,6,7,8,9} Octal System        Alphabet = {0,1,2,3,4,5,6,7,} Hexadecimal System         Alphabet = {0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F} Binary System         Alphabet = {0,1}

What is a Computer System Computer System is an inter related set of components which works together to achieve a specific tasks of data processing. It process textual data, numeric data, graphical (visual) data & signals History of Computer Systems The history of computer system dated back to the 17 th century. The term computer was not used then. First man made computing device is found among the Chinese which is called ABACUS. The ABACUS was initially used for arithmetic tasks. Around 19th century Charles Babbage conceptualized and invented the first mechanical computer. He called it “Analytical Engine”. Computer Classification 

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