Basic Computer Notions Software

Next A simple computer Instruction format Instruction format (cont'd) Machine instructions Machine instructions (cont'd) Machine instructions (cont'd) Machine instructions (cont'd) Machine instructions (cont'd) Machine-language Programming Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) 24 of 50 Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Machine-language Programming (cont'd) Sample data Using an ‘intelligent’ computer Using a not-so-intelligent computer Using an ‘English-like’ query system Using a highly interactive system Using a highly interactive system (cont'd) Using a highly interactive system (cont'd) Using a highly interactive system (cont'd) Using SQL (Structured Query Language) Using a report-generation language Using a general-purpose high-level programming language Using assembler language Compilers and interpreters Compilers and interpreters (cont'd) Types of software Operating systems Operating systems are very complex Operating systems need to be very robust Consequences Consequences (cont'd)

Machine-language Programming (cont'd)

00000  00101010           GET SCORE1
00001  01101011           ADD SCORE2
00010  01001100           PUT TOTAL
00011  01101101           ADD (-50)
00100                     JUMPGT PASS
00101                     GET ('F')
00110                     JUMP END
00111             PASS:   GET ('P')
01000             END:    PUT GRADE
01001                     STOP
01010             SCORE1: **
01011             SCORE2: **
01100             TOTAL:  **
01101                     -50
01110                     'F'
01111                     'P'
10000             GRADE:  **

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Last modified: Thu, 2007 Mar 15 08:35:42

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