**Fill in the blanks.**

i. The data, which consists of alphabets as well as numbers, is known as **Alphanumeric Data.**

ii. The number, which is in the exponential form, is called **Floating point number.**

iii. The **Information** is a meaningful, useful, and processed form of data.

iv. **Eight (8)** is a base of octal system.

v. The maximum digit of hexadecimal number system is **16.**

vi. ASCII stands for **American Standard Code for Information Interchange.**

vii. A floating-point number consists of two parts known as **Mantissa and Exponent.**

viii. The method of 2’s complement arithmetic is commonly used in computers to handle **negative** numbers.

ix. In **BCD** code each decimal digit is represented by a binary code of four bits.

x. Computers can recognize a total of **256** different characters.

1. The **bit** is the smallest unit of memory

2. A system used to convert information into numbers is called **number system.**

3. The total number of digits used in a number system is called its **base or radix.**

4. The number system with a base of 2 is called **binary** number system.

5. The number system with a base of an 8 is called **octal **number system.

6. The number system with a base of 10 is called **decimal **number system.

7. The number system with a base of 16 is called **hexadecimal** number system.

8. The term bit means bin**ary digits.**

9. The number system used in our daily routine is **decimal** number system.

10. Decimal number system consists of **10** digits.

11. Binary number system is based on 2 digits the **0 and 1.**

12. Computer can process only **binary **number system.

13. Octal number system consists of 8 digits i.e. **0 to 7.**

14. One octal number represents **3** binary digits.

15. One hex number represents** 4** binary digits.

16. Hexadecimal number system consists of **16** numbers.

17. Sixteen numbers of hexadecimal number system are **0—9, A, B, C, D, E and F.**

18. In hexadecimal number system A to E letters represent 10, 11, 12, 13, **14 and 15** representative

19. To convert decimal number to its binary equivalent divide the number by **2** repeatedly till quotient becomes zero.

20. We divide the decimal number by **8** to convert decimal number to its octal equivalent.

21. We divide (lie decimal number by **16** to convert decimal number to its hex equivalent.

22. In decimal to binary, octal and hexadecimal conversion remainders are noted in **reverse **order as** **answer.

23. To convert** binary** number to decimal equivalent all the digits are multiplied with 20, 21, 22 etc.

24. To convert **octal **number to decimal all the digits are multiplied with 80, 81, 82 etc.

25. In binary to octal conversion, binary digits are grouped into **3** bits.

26. In binary to hexadecimal conversion, binary digits are grouped into **4** bits.

27. Write the base 2 number zero, one, one, zero **0110****2**

28. Write the first ten number of decimal number system **0, 1, 2, 3, 4, 5, 6,7, 8, 9.**

29. Write the 16 symbols used in hexadecimal system.

** 0, 1, 2, 3, 4, 5, 6, 7, 9, 9, A, B, C D, F** **and F**

30. In binary addition sum of 0 + 0 = **0**

31. In binary addition sum of 0 + 1 = **1**

32. In binary addition sum of I + 1 = **0 with carry of 1.**

33. In binary addition sum of 1 + 1 + 1 = 1 **with carry of 1.**

34. In binary subtraction 0 – 0 = **0**

35. In binary subtraction 1 – 0 = **1**

36. In binary subtraction 1 – 1 = **0**

37. In binary subtraction 0 – 1 = **1** **with a borrow of 1.**

38. The binary number which follows 100 is **101.**

39. The binary number which follows 1000 is **1001.**

40. The binary number which follows 011 is **100.**

41. The decimal number E is equal to **14** in decimal number system.

42. The **decimal **number system is widely used in daily life.

43. The** binary** number system has proved the most efficient system for machine use.

44. Digital computers are built from components that have **two** states.

45. **Data** are the words, numbers and graphics that describe people, events, things and ideas.

46. Data means **collection of facts.**

47. When data is arranged in a suitable manner, then it is called **information.**

48. In computers data items can be classified into three types which are **numeric, alphabetic and alphanumeric.**

49. **Integer** data consists of positive or negative whole numbers including zero.

50. The data that contains numbers which may be fractions is called **real data.**

51. Alphanumeric data contains a combination of **numerals and letter of alphabets including special characters.**

52. The word BIT stands for either of the binary digits **0 or 1.**

53. The **decimal **number system consists of 10 digits namely 0 to 9.

54. Computers understand only the **binary number** system.

55. A few of the codes represent the data are Binary. BCD. ASCII and **EBCDIC.**

56. The 2s complement of a binary number is formed by adding **1** to the LSB of 1’s complement.

57. LSB stands for **Least Significant Bit.**

58. MSB stands for **Most Significant Bit.**

59. 1’s complement of 101 is **010**

60. ELICOIC’ code was primarily used by **international Business Machine (IBM).**

61. EBCDIC is a **8** bit code.

62. ASCII stands for **American Standard Code for information Interchange.**

63. ASCII has** 256** character and symbols.

64. EBCDIC stands for **Extended Binary Coded Decimal Interchange Code.**

65. BCD stands for **Binary Coded Decimal.**

66. 8 bits have** 256** combinations.

67. Modern computer use 8 bit codes, which can accommodate **36 **alphanumeric characters and 220 special characters.