What are ASCII, BCD, EBCDIC, Unicode and parity bit?

ASCII:

ASCII is the American Standard Code for Information Interchange. The characters encoded are number 0-9, a-z, A-Z, basic punctuation symbols, control codes.

BCD:

BCD stands for Binary Coded Decimal. It represent by a 4-bit number and four bits we can represent sixteen numbers (0000 to 1111). But in BCD code only first ten of these are used (0000 to 1001).

EBCDIC:

EBCDIC stands for Extended Binary-Coded Decimal Interchange Code. It has 8-bit code. It was used by IBM mainframes computers.

Unicode:

Unicode is a standard for representing the characters of all the languages of the world, including Chinese, Japanese, and Korean. Unicode used 16-bits per character to represent 65,536(2¹⁶) unique characters.

Draw the basic organization of computer

Answer: The basic organization of computer__ Input Unit: · It accepts (or reads) instructions and data from outside. · It converts these instructions and data in computer acceptable form · It supplies the converted instructions and data to the computer system for further processing. Central Processing Unit (CPU): Control Unit: Control unit of a computer system manages and coordinates the operations of all other components of the computer system. Arithmetic Logic Unit(ALU): Arithmetic logic unit of a computer system is the place, where the actual executions of instruction, takes place during processing operation. Storage Unit: Primary Memory: It is volatile ( loses data on power ...

Describe the four basic data types. How could we extend the range of values they represent?

Answer: The basic four data types are: Data Type Integer Type Character Type Floating Point Type Void Type signed int short int long int unsigned unsigned int unsigned short int unsigned long int char signed char unsigned char float double long double

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