Number system
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Table of Content:
What is a Number System?
A number system is a way to represent numbers using a set of symbols (digits). The position of each digit gives it a weight or value depending on the base of the system.
Common Number Systems:
| Number System | Base | Digits Used | Example |
|---|---|---|---|
| Binary | 2 | 0, 1 | 1101₂ |
| Octal | 8 | 0 to 7 | 745₈ |
| Decimal | 10 | 0 to 9 | 495₁₀ |
| Hexadecimal | 16 | 0–9, A–F | 1F4₁₆ |
Digital electronics represents discrete signals instead of signals in a continuous range. It uses two binary levels 0’s (corresponding to false) and 1’s (corresponding to true). The main reason for advancement in digital electronics is integrated circuits (ICs).
Number system is an age old method to represent numerals (Fig. Below). Decimal number system is the most common number system and binary number system is used by computers.
- Question 1: What are the bases of decimal, octal, binary and hexadecimal systems?
- Question 2: What is Unicode? How many characters are represented by it?
- Question 3: What is ISCII? How many bits are used by ISCII?
- Question 4: What does a word represent?
- Question 5: What is the full form of ASCII and EBCDIC?
- Question 6: What is the use of ASCII code?
- Question 7: When and why are octal and hexadecimal numbers preferred over binary numbers?
- Question 8: Complete the sequence of following hexadecimal numbers: 17, 18, 19.
- Question 9: Complete the sequence of following octal numbers: 525, 526, 527.
- Question 10: Complete the sequence of following binary numbers: 100, 101, 110.
- Question 11: What is the common property of decimal, octal, binary and hexadecimal?
- Question 12: Does Unicode support Indian Scripts? If yes, then name them.