chap 3 ALPHANUMERIC CODE

Question 1

ASCII

Answer 1

American Standard Code for Information Interchange

Question 2

introduced extended ASCII, which is an 8-bit code and increased
the character set to 256.

Answer 2

In 1981, IBM

Question 3

Other extended sets (such as ———) have been introduced to
handle characters in languages other than English.

Answer 3

Unicode

Question 4

It is a computer codes that represent letters of the alphabet, punctuation marks and other special characters as well as numbers.

readings only

Question 5

A complete alphanumeric code would include the —- lower case letters, —- upper case letters, —- numeric digits, —- punctuation marks and any where from 20 to 40 other characters such as +, -, /, #, %, * and so on.

Answer 5

26, 26, 10, 7

Question 6

is a code for alphanumeric characters and control characters.

Answer 6

ASCII

Question 7

In its original form, ASCII encoded —– characters
and symbols using 7-bits. The first 32 characters are control characters, that are based on obsolete teletype requirements, so these characters are generally assigned to other functions in modern usage.

Answer 7

128,

Question 8

is a decimal code that has been used in older computers. This is an
unweighted code

Answer 8

EXCESS-3 CODE

Question 9

Its binary code assignment is obtained from the corresponding BCD equivalent binary number after the addition of binary 3 (0011).

readings only

EXCESS-3 CODE