(101.10)₁₆ in binary From 
= 1       0       1       1       0
0001  0000  0001  0001  0000
(101.10)₂ = (000100000001.00010000)₂
(101.10)₁₆  in Decimal Form
(101.10)₂  = 1 x 16² + x 16¹ + 1 x 16⁰ + 1 x 16^-1 + 0 x 16^-2
= 256 + 0 + 1 + 0.0625 + 0 =(275.0625)₁₀ 

ISCII (Indian Script Code for Information Interchange):
(i) In order to encode Indian languages Ion computers, a common standard for coding Indian scripts is developed which is called as ISCI!. In 1991, the Bureau of Indian Standards adopted the Indian Standard Code for Information Interchange (ISCII).
(ii) ISCII standard is evolved by a standardization committee during 1986-88. The ISCII document is available as IS 13194: 1991 from the BIS offices.
(iii) Assamese, Bengali (Bangla), Devanagari, Gujarati, Gurumukhi, Kannada, Malayalam, Oriya, Tamil, and Telugu are supported in ISCII. ISCII has been used by IBM for PCDOS, Apple for ILK, and several companies are developing products and solutions based on this representation.
TSCII (Tamil Standard Code for Information Interchange):
(i) Tamil Standard Code for Information Interchange is the Tamil encoding scheme designed to handle the entire Tamil alphabet. TSCII is proposed by the Internet Working Group for the Tamil Standard Code (IWG-TSC).
(ii) The Tamil alphabets have soup (247), grantha characters (13), and Tamil numerals (13). The number of unique Tamil glyphs to consider is about 170. Since the number of slots available in the upper-ASCII segment (#128-255) is much less than the required slot for each character in Tamil.
(iii) Therefore, few Tamil alphabets are to be included in the native form, and the others are generated using modifiers (several keystrokes in sequence).

A number system is a set of digits used to represent the values derived from a common base or radix.
Decimal Number System:
(i) The term Decimal is derived from a Latin prefix deci, which means ten.
(ii) The Decimal number system has ten digits ranging from 0-9. Because this system has ten digits.
(iii) It is also called as a base ten number system or denary number system.
(iv) Decimal number should always be written with a subscript 10.
Binary umber System:
(i) The decimal number system is not convenient to implement in digital system.
(ii) For instance, it is very difficult to design electronic equipment so that it can work with 10 different voltage levels (each one representing one decimal character, 0 through 9).
(iii) On other hand, it is very easy to design simple, accurate electronic circuits that operate with only 2 voltage levels.
(iv) For this reason, almost every digital system utilizes the binary number system (base 2) as the basic number system of its operation;
(v) In a binary system, there are only two symbols or possible digit values, 0 and 1.
Octal Number System:
(i) The octal number system is playing a vital role in digital computer work.
(ii) The octal number system has a base of 8.
(iii) It means that it has eight unique symbols such as 0,1,2,3,4,5,6 and 7.
(iv) Thus, each digit of an octal number can have any value from 0 to 7.
(v) The places to the left of the octal point are positive powers of 8 and places to the right are negative powers of 8.
Hexademical Number System:
(i) The hexadecimal system uses base 16 in digital systems.
(ii) It has 16 possible symbols.
(iii) It uses the digits 0 through 9 plus the letters A, B, C, D, E and F as the 16 different symbols.
(iv) Hexadecimal System is a positional value system, wherein each hexadecimal digit has its own value or weight expressed as a power of 16.

(i) Unicode is the newest concept in digital coding. In Unicode, every number has a unique character.
(ii) Unicode is the universal character encoding standard used for the representation of text for computer processing
(iii) It can be used to store and process all significant current and past languages. Unicode provides a unique hex encoded number for every character
(iv) Unicode is a 16-bit code, which allows for about 65,000 different representations. This is enough to encode the popular Asian languages (Chinese, Korean, Japanese, etc.)
(v) It also turns out that ASCII codes are preserved. Therefore, conversion between ASCII and Unicode is a simple method (take all one byte ASCII codes and zero-extend them to 16 bits).
(vi) This will be the Unicode version of the ASCII characters. The C, C++ programs use the ASCII Code, and Java programs have already used Unicode. The Unicode Standard has been adopted by industry leaders such as Apple, HP, IBM, Microsoft, Oracle, SAP, Sun, Sybase, and Unisys. Unicode is required by web users and modem standards.

AND and OR operation from NAND gates are shown below

A.B = (A NAND B) NAND ( A NAND B)
OR operation

A+B (ANAND A)NAND (B NANDY Y)
b) AND AND OR operation from NOR gates are shown below.

A - B = (A NORA A) NOR (B NOR B)

A+ B = (A NOR B) NOR (A NOR B)