33. ลักษณะการบันทึกเทป
• Inter record Gap
• Block
• Physical record
• logical record
Record 1 Record
2
Record 3
Interrecord Gap
Interblock Gap
Logical
Record
Physical
Record
R1 R2 R3
34. DAS: DIRECT ACCESS STORAGE
• Magnetic Disk
• Diskette
• Hard disk or Fixed disk
• CD-ROM
47. L 3,4
L 4,B
AR 3,4
ST 3,C
01011000 00110000
11000000 00000000
01011000 01000000
11000000 00000100
00011010 00110100
01010000 00110000
11000000 00001000
Machine Language
ASSEMBLER COMPILER
48. ADD A TO B GIVING
C
01011000 00110000
11000000 00000000
01011000 01000000
11000000 00000100
00011010 00110100
01010000 00110000
11000000 00001000
Machine Language
COBOL COMPILER
49. • System software
• Operating System:OS
• Processing Program
* Language Translater
* Utilities Program
• Application Program
• Special Purpose
Program
• Software Package
*Word processor
*Worksheet
*Database
ประเภทของ SOFTWARE
52. ภาพการทางานระหว่าง HARDWARE กับ SOFTWARE
USER
COMMAND LANGUAGE PROCESSOR
OPERATING
SYSTEM
COMPUTER
HARDWARE
CPU MEMORY
DEVICE
EDITORS FILE SYSTEM
LANGUAGE
PROCESSOR
COMMUNICATION
SUPPORT
APPLICATION
PROGRAMS
LOADER
WORD
PROCESSOR,
GRAPHICS
PACKAGE,
GRAMES
USER
USER
USER
53. ศัพท์ที่ควรทราบ
• Time Sharing
• Multiprogramming
• Single CPU, Multiple CPU
• Multiple Program in Memory
• Single (Multiple) Program in
Execution
54. บุคลากรคอมพิวเตอร์ (PEOPLE WARE)
• ระดับผู้บริหำร (Administration)
• Electronic Data Processing manager :EDP
• ระดับวิชำกำร (Technical)
• System Analyst and Designer, Programmer
• ระดับปฏิบัติกำร (Operation)
• Computer Operator
• Keypunch Operator, Data Entry