Page 60 - Cs_withBlue_J_C11_Flipbook
P. 60
Internally, however, it appears as a 7-bit code, the leftmost bit called the check bit or parity bit is added as shown
below:
Check bit Zone bits Numeric bits
B A 8 4 2 1
The following table represents a 6-bit BCD code:
Character Zone bit Numeric bit Octal value
A 11 0001 61
B 11 0010 62
C 11 0011 63
D 11 0100 64
E 11 0101 65
F 11 0110 66
G 11 0111 67
H 11 1000 70
I 11 1001 71
J 10 0001 41
K 10 0010 42
L 10 0011 43
M 10 0100 44
N 10 0101 45
O 10 0110 46
P 10 0111 47
Q 10 1000 50
R 10 1001 51
S 01 0010 22
T 01 0011 23
U 01 0100 24
V 01 0101 25
W 01 0110 26
X 01 0111 27
Y 01 1000 30
Z 01 1001 31
1 00 0001 01
2 00 0010 02
3 00 0011 03
4 00 0100 04
5 00 0101 05
6 00 0110 06
7 00 0111 07
8 00 1000 10
9 00 1001 11
0 00 1010 12
+ 11 0000 60
_
10 0000 40
* 10 1100 54
/ 01 0001 21
= 00 1011 13
5858 Touchpad Computer Science-XI

