Business Programming I

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Business Programming I

• Fall 2000
• By
• Jim Payne

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Alphanumeric Storage

• Numbers that are not numbers?
• Alphabetic Characters A,B,C,a,b,c
• Special Symbols ( ? /

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Coding Systems

• EBCDIC used in many mainframes
• Extended Binary Coded Decimal Interchange Code
• An IBM coding system used mainly on mainframe
  computers
• ASCII used on most PCs
• American Standard Code for Information
  Interchange

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(No Transcript)
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2 3 2 2 2 1 2 0
8 4 2 1
The capital letter A has a hex value of 41,
and a binary value of
0 0 0 1
0 1 0 0
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2 3 2 2 2 1 2 0
8 4 2 1
The alphanumeric 7 has a hex code of 37, and a
coded binary ascii code of
0 1 1 1
0 0 1 1
7
2 3 2 2 2 1 2 0
8 4 2 1
What is the binary equivalent of GO TU!
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HD 1.4MB diskette 2 sides 80 tracks 18
sectors 2880 allocation units _at_ 512 bytes each
Total space 1,474,560 bytes Less 33 allocation
units for system information Available Storage
1,457,664 bytes

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Allocation unit 2880 _at_ 512 bytes each
Sector 18

Sides 2
Tracks 80
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1 allocation unit 512 bytes 4096
bits 0100000101000001.

magnetized spots
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Convert to Binary?

• The number 11
• The alphanumeric 11
• The zip code 74104
• The salary 74104

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switches
CPU
Primary RAM 10101010101010010010100010101010100101
0101010101
Input
Output
How many bytes? How many bits? in each
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CPU
64MB of RAM 10241024 1,048,576 1 Megabyte
64 67,108,864 bytes 8 536,870,910 bits or
switches
Input
Output
Disks 1.4MB 10 Gigabytes 100 MB Zip
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Go TU !!!