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Cassandra Calloway

Date: 07/05/2012

The only language that computer understand is machine language aka binary code the instruction to the computer is called programs applications or software must ultimately be in binary form the instructions for starting the computer are in Rom the bits for Rom are set permanently so it doesn’t lose it contents when the electricity is turned off so Rom is not volatile the instructions for starting the computer are called BIOS basic input output system the operating system is the instructions to the computer about how to operate it has instruction for managing computer resources such as memory the CPU central processing unit disk drives providing the user interface the user interface is what people use to interact with the omputer executing application running programs some os can only run one program at a time some support multi tasking having multiple programs run simultaneously computer can’t do anything without instructions there are layers and layers of instructions the programs that programmers write use a program that someone else wrote called a progamming langusge like c++ Java or pyrhon those language consist of commands which are instructions to the computer. The computer must have instructions on how to translate a computer language to the machine language there are two types of programs for translating computer languages compilers interpreters. A compiler translates all the source code in a program to machine language( ML) before it’s executed the compiled program (ML) is then excuted by the CPU this ML can then be used every time the program is run unless the source code is changed. Then it must be recompiled . An