The Hexadecimal number system is also used to represent colour codes. For example, a memory address 1101011010101111 is a big binary address but with hex it is D6AF which is easier to remember. The Hexadecimal number system is used in computers to specify memory addresses (which are 16-bit or 32-bit long). What is the use of Hexadecimal number system on computers ? The most commonly used number systems are decimal, binary, octal and hexadecimal number systems. What are some number systems used by computers ? UTF8 and UTF32 are the only encoding schemes supported by Unicode.įalse Type A: Short Answer Questions Question 1 UTF8 is a variable-length encoding scheme and can represent characters in 1 through 4 bytes. Unicode is able to represent nearly all languages' characters. ISCII is an encoding scheme created for Indian language characters. Number systems can also represent characters. The number of unique symbols in Hexadecimal number system is 15. True/False Questions Question 1Ī computer can work with Decimal number system.Ī computer can work with Binary number system.
Unicode value of a symbol is called code point. UTF32 takes exactly 4 bytes to represent a symbol. UTF8 can take upto 4 bytes to represent a symbol. The ISCII encoding scheme represents Indian Languages' characters on computers. The Unicode encoding scheme can represent all symbols/characters of most languages. Question 9ĪSCII is a 7 bit code while extended ASCII is a 8 bit code. Question 8Įach Hexadecimal number is replaced with 4 bits in Hex to binary conversion. Question 7Įach octal number is replaced with 3 bits in octal to binary conversion. Hexadecimal number system recognizes symbols 0 to 9 and A to F.
The illegal digits of octal number system are 8 and 9. The Hexadecimal number system is composed of 16 unique symbols. The Octal number system is composed of 8 unique symbols. The Binary number system is composed of 2 unique symbols. The Decimal number system is composed of 10 unique symbols. Which of the following is not a valid encoding scheme for characters ? Which of the following is not a valid UTF8 representation? Which of the following is not a binary number ?Ĭonvert the hexadecimal number 2C to decimal: The input hexadecimal representation of 1110 is. The binary equivalent of the octal Numbers 13.54 is. How many bytes are there in 1011 1001 0110 1110 numbers? The binary equivalent of the decimal number 10 is. The hexadecimal digits are 1 to 0 and A to. Which of the following are not valid symbols in decimal number system ? Which of the following are not valid symbols in hexadecimal number system ? Which of the following are not valid symbols in octal number system ? The value of radix in hexadecimal number system is. The value of radix in decimal number system is. The value of radix in octal number system is. The value of radix in binary number system is. Chapter 2 Data Representation Class 11 - Computer Science with Python Sumita Arora