Describe professional programing languages and talks
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The document describes the different components of a computer including the hardware which consists of physical components like processors and memory, and the software which are programs that can be understood by the hardware. It then discusses the different generations of programming languages from low-level machine code to high-level abstract languages, as well as language translators like assemblers, compilers, and interpreters that translate programs between different language levels.
Describe professional programing languages and talks
- 1. UNIT32 AO2 Describe professional programing languages and talks Computer consists of Hardware and Software Hardware: Electronic chips and components, processors, graphics card, motherboard, hard drives, fans, disk drive, data ports, circuit boards, memory. Software: software consists of sequences of instructions called programs that can be understood by hardware A Computer program is a sequence of instructions Generation of programing language Hardware 1st Generation 2nd Generation 3rd Generation 4th Generation Low Level Abstraction High Level Abstraction Machine code Assembly code Problem oriented languages (imperative language). C= systems solutions/software. PHP= Server side scripting, Basic Declarative programing language - C+T, Java - Declare variables and then processes them when needed. Abstract Source code Fast processingSlow to precess object code Literal 4th Gen 3rd Gen 2nd Gen 1st Gen
- 2. Language Translators = translate program written in source code into excitable instructions understood by the computer in its own object code. Assembler = translate an assembly language into machine code. Compiler = translates an entire program with in a high level source code into object code in one go (+) no translation required at run time - runs faster. (-) long programs may require a long time to complete before then can run. Interpreter = analyses and translates individual lines of code at run time. (+) possible to test section of code during development (-) slower to process at run time