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# INTRO TO COMPUTING I CS 101

UK

GPA 3.92

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This 3 page Class Notes was uploaded by Juvenal Beahan on Friday October 23, 2015. The Class Notes belongs to CS 101 at University of Kentucky taught by Debby Keen in Fall. Since its upload, it has received 11 views. For similar materials see /class/228216/cs-101-university-of-kentucky in ComputerScienence at University of Kentucky.

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Date Created: 10/23/15

Chapter 6 A Closer Look At System Hardware Data Representation 0 Process of transforming diverse data into a form computers can use for processing 0 Digital devices work with distinct and separate data 0 Analog devices work with continuous data 0 Digital vs Analog Analog signals have an infinite number of values ranging fro 0 1 Digital signals have a discrete number of values either 0 or 1 Analog cameras use light protons striking a prepared film to record colors lots of different colors possible Digital cameras use light protons striking a sensor to turn the signal into a number Various storage devices can store the numbers 0 Representing Numbers Humans use the decimal numbering system 0 9 computers use the binary numbering system 0 s and 1 s On 1 Off 0 The Binary Number System Describes a number as powers of two also referred to as base two numbering system Used to represent EVERY piece of data stored in a computer Number of Patterns If you had three DECIMAL digits the smallest 3 digit number you could write is 000 and the largest is 999 If you had three BINARY digits the smallest 3 digit number you could write is 000 and the largest is 111 There are 8 patterns you could write these digits Binary Patterns 000 001 010 011 100 101 110 111 o Representing Letters and Symbols CI 8 bits 1 byte alphanumeric character or symbol 256 different combinations Unicode 16 bits 2 bytes one symbol 65000 different combos used for all languages Microprocessor Performance Factors 0 Serial Processing All activities are done on one CPU Pipelining processes do independent tasks simultaneously allowing the overall job to finish faster 0 Parallel Processing The tasks are divided among multiple CPUs Modern Dual Core Processors actually contain all of the circuitry for two separate microprocessors Chapter 6 A Closer Look At System Hardware Data Representation 0 Process of transforming diverse data into a form computers can use for processing 0 Digital devices work with distinct and separate data 0 Analog devices work with continuous data 0 Digital vs Analog Analog signals have an infinite number of values ranging fro 0 1 Digital signals have a discrete number of values either 0 or 1 Analog cameras use light protons striking a prepared film to record colors lots of different colors possible Digital cameras use light protons striking a sensor to turn the signal into a number Various storage devices can store the numbers 0 Representing Numbers Humans use the decimal numbering system 0 9 computers use the binary numbering system 0 s and 1 s On 1 Off 0 The Binary Number System Describes a number as powers of two also referred to as base two numbering system Used to represent EVERY piece of data stored in a computer Number of Patterns If you had three DECIMAL digits the smallest 3 digit number you could write is 000 and the largest is 999 If you had three BINARY digits the smallest 3 digit number you could write is 000 and the largest is 111 There are 8 patterns you could write these digits Binary Patterns 000 001 010 011 100 101 110 111 o Representing Letters and Symbols CI 8 bits 1 byte alphanumeric character or symbol 256 different combinations Unicode 16 bits 2 bytes one symbol 65000 different combos used for all languages Microprocessor Performance Factors 0 Serial Processing All activities are done on one CPU Pipelining processes do independent tasks simultaneously allowing the overall job to finish faster 0 Parallel Processing The tasks are divided among multiple CPUs Modern Dual Core Processors actually contain all of the circuitry for two separate microprocessors Chapter 6 A Closer Look At System Hardware Data Representation 0 Process of transforming diverse data into a form computers can use for processing 0 Digital devices work with distinct and separate data 0 Analog devices work with continuous data 0 Digital vs Analog Analog signals have an infinite number of values ranging fro 0 1 Digital signals have a discrete number of values either 0 or 1 Analog cameras use light protons striking a prepared film to record colors lots of different colors possible Digital cameras use light protons striking a sensor to turn the signal into a number Various storage devices can store the numbers 0 Representing Numbers Humans use the decimal numbering system 0 9 computers use the binary numbering system 0 s and 1 s On 1 Off 0 The Binary Number System Describes a number as powers of two also referred to as base two numbering system Used to represent EVERY piece of data stored in a computer Number of Patterns If you had three DECIMAL digits the smallest 3 digit number you could write is 000 and the largest is 999 If you had three BINARY digits the smallest 3 digit number you could write is 000 and the largest is 111 There are 8 patterns you could write these digits Binary Patterns 000 001 010 011 100 101 110 111 o Representing Letters and Symbols CI 8 bits 1 byte alphanumeric character or symbol 256 different combinations Unicode 16 bits 2 bytes one symbol 65000 different combos used for all languages Microprocessor Performance Factors 0 Serial Processing All activities are done on one CPU Pipelining processes do independent tasks simultaneously allowing the overall job to finish faster 0 Parallel Processing The tasks are divided among multiple CPUs Modern Dual Core Processors actually contain all of the circuitry for two separate microprocessors

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