Page 1 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 1/30 Chapter 4: Computer Codes Ref. Page Page 2 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 1/30 Chapter 4: Computer Codes Ref. Page Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 2/30 Chapter 4: Computer Codes Ref. Page In this chapter you will learn about: § Computer data § Computer codes: representation of data in binary § Most commonly used computer codes § Collating sequence Learning Objectives Learning Objectives 36 Page 3 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 1/30 Chapter 4: Computer Codes Ref. Page Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 2/30 Chapter 4: Computer Codes Ref. Page In this chapter you will learn about: § Computer data § Computer codes: representation of data in binary § Most commonly used computer codes § Collating sequence Learning Objectives Learning Objectives 36 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 3/30 Chapter 4: Computer Codes Ref. Page § Numeric Data consists of only numbers 0, 1, 2, …, 9 § Alphabetic Data consists of only the letters A, B, C, …, Z, in both uppercase and lowercase, and blank character § Alphanumeric Data is a string of symbols where a symbol may be one of the letters A, B, C, …, Z, in either uppercase or lowercase, or one of the digits 0, 1, 2, …, 9, or a special character, such as + - * / , . ( ) = etc. Data Types Data Types 36 Page 4 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 1/30 Chapter 4: Computer Codes Ref. Page Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 2/30 Chapter 4: Computer Codes Ref. Page In this chapter you will learn about: § Computer data § Computer codes: representation of data in binary § Most commonly used computer codes § Collating sequence Learning Objectives Learning Objectives 36 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 3/30 Chapter 4: Computer Codes Ref. Page § Numeric Data consists of only numbers 0, 1, 2, …, 9 § Alphabetic Data consists of only the letters A, B, C, …, Z, in both uppercase and lowercase, and blank character § Alphanumeric Data is a string of symbols where a symbol may be one of the letters A, B, C, …, Z, in either uppercase or lowercase, or one of the digits 0, 1, 2, …, 9, or a special character, such as + - * / , . ( ) = etc. Data Types Data Types 36 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 4/30 Chapter 4: Computer Codes Ref. Page § Computer codes are used for internal representation of data in computers § As computers use binary numbers for internal data representation, computer codes use binary coding schemes § In binary coding, every symbol that appears in the data is represented by a group of bits § The group of bits used to represent a symbol is called a byte Computer Codes Computer Codes (Continued on next slide) 36 Page 5 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 1/30 Chapter 4: Computer Codes Ref. Page Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 2/30 Chapter 4: Computer Codes Ref. Page In this chapter you will learn about: § Computer data § Computer codes: representation of data in binary § Most commonly used computer codes § Collating sequence Learning Objectives Learning Objectives 36 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 3/30 Chapter 4: Computer Codes Ref. Page § Numeric Data consists of only numbers 0, 1, 2, …, 9 § Alphabetic Data consists of only the letters A, B, C, …, Z, in both uppercase and lowercase, and blank character § Alphanumeric Data is a string of symbols where a symbol may be one of the letters A, B, C, …, Z, in either uppercase or lowercase, or one of the digits 0, 1, 2, …, 9, or a special character, such as + - * / , . ( ) = etc. Data Types Data Types 36 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 4/30 Chapter 4: Computer Codes Ref. Page § Computer codes are used for internal representation of data in computers § As computers use binary numbers for internal data representation, computer codes use binary coding schemes § In binary coding, every symbol that appears in the data is represented by a group of bits § The group of bits used to represent a symbol is called a byte Computer Codes Computer Codes (Continued on next slide) 36 Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Computer Fundamentals: Pradeep K. Sinha & Priti Sinha Slide 5/30 Chapter 4: Computer Codes Ref. Page § As most modern coding schemes use 8 bits to represent a symbol, the term byte is often used to mean a group of 8 bits § Commonly used computer codes are BCD, EBCDIC, and ASCII Computer Codes Computer Codes (Continued from previous slide..) 36Read More

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