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Modern Computer Architecture
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Machine Language, Assembly Language and High Level Languages Machine Language A series of numbers that are directly interpreted by the computer as instructions 184 0 9 186 10 1 205 33 205 32 72 101 108 108 111 32 119 111 114 108 100 33 36 What does it mean? 184 = Store next 2 values in box A 186 = Store next 2 values in box B 205 = Ask the operating system to do something for us etc…
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Assembly Language Assembly languages have the same structure and set of commands as machine languages, but they enable a programmer to use words/ names instead of numbers. MOV AX, 0900 MOV DX, offset Message INT 21 INT 20 Message db “Hello world!$”
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High-level Languages High level languages are high-level because they are closer to human languages and further from machine languages . They allow the programmer to write programs that are more or less independent of a particular type of computer . // “hello world” SOURCE CODE! #include <iostream> void main(void) // start of program { std::cout << “Hello world!”; }
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Software Components Operating System Every computer must have an operating system to run other programs.
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