Decimal 0000 0001 0010 0011 0100 0101 Binary

���� Decimal 0000 0001 0010 0011 0100 0101 Binary 0 1 2 3 4 5

����� EBCDIC F Extended Binary Coded decimal Interchange Code F ������� IBM ������� mainframe

����� ASCII F American Standard Code for Information Interchange F ������� Mini computer ��� Personal computer

���� Character 0000 011 0001 011 0010 011 011 0100 011 0101 011 EBCDIC 0000 1111 0001 1111 0010 1111 0011 1111 0100 1111 0101 1100 ASCII 0 1 2 3 4 5

���� Character A B C D E F EBCDIC 1100 0001 1100 0010 1100 0011 1100 0100 1100 0101 1100 0110 ASCII 100 0001 100 0010 100 0011 100 0100 0101 100 0110

������� 100000101110010010 1110011010110000010011 101110001111100000 1100111100011010000001 01010110110001 010100001011000101 11010101010000000

The Parity Bit (check bit( �������������� F ������ : oddpartiy system, even-parity system F

���� ODD-PARITY SYSTEM S U S A N 11100010 11100100 11100010 11000001 11010101

���� ODD-PARITY SYSTEM Parity bit S U S A N 111000101 111001001 111000101 110000010 11010 Number of 1 bits 5 5 5 3 5

���� ODD-PARITY SYSTEM Parity bit S U S A N 111000101 111001001 011000101 110000010 11010 Number of 1 bits 5 5 4*** 3 5

General Thailand is located in Southeast Asia. The capital city is Bangkok. There are 76 provinces. A B G H Programmer input salary tax = salary *. 10 net = salary - tax print net, tax C D E F I K L J

1001 0000 001 0001 1000 101 A B G H C D E F I K L J Intel CPU

1000 101 1111 000 PRIMARY STORAGE 1001 001 0001 1000 101 001 0001 100 0011 001 1111 000 1010 0001 0001 000 1111 1001 000 1111 0001 100 CPU SECONDARY STORAGE

PRINTER 1001 001 0001 1000 101 001 0001 100 0011 001 1111 000 1010 0001 000 CPU 0001 0001 000 1111 101 MONITOR

000 0001 0110 000 1001 0001 100 Thailand is located in Southeast Asia. The capital city is Bangkok. There are 76 provinces. General input salary tax = salary Programmer

0001 010 0001 011

������ RAM The more RAM in your computer, the more powerful the programs you can run. FThe more RAM in your computer, the more speed you can get. F

������ RAM ������ PC � ������� F F F F F ���� 1980 4 K 64 1980 K 256 1985 K 640 1987 K 1, 024 1990 K 4, 096 1993 K 8, 192 1995 K 16, 384 1997 K 32, 768 1998 K