Fundamental of Computer

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Fundamental of Computer

• Suthida Chaichomchuen SCC
• std_at_kmitnb.ac.th

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Computer Components

• Hardware (architecture)
• Software (instruction set)

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Basic Hardware

• Bits
• Bytes
• Registers
• Memory
• Processor
• Data Bus

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Hardware Components

• Internal hardware
• Microprocessor
• Memory
• Registers
• External hardware
• Input/Output Devices

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Software Organization

• Programs
• Data files
• Operating System

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Computer storage

• Bit
• On 1
• Off 0
• Byte
• data 8 bits
• parity 1 bit (automatically setting)

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Related bytes

• Word
• Doubleword
• Quadword
• Paragraph
• Kilobyte
• Megabyte

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Binary numbers
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Binary arithmetic
Decimal Binary 65 01000001
42 00101010 107 01101011
Decimal Binary 60 00111100
53 00110101 113 01110001
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Negative Binary Numbers
Reverse the bit value and add 1
Number 65 01000001 Reverse the bits
10111110 Add 1 1 Number -65
10111111
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Hexadecimal Representation
Binary 1011 1001 1100 1110 Decimal 11
9 12 14 Hexadecimal B 9
C E
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Homework (Submit before next week)

• Processor
• Register
• Segment