Perfect Computer Notes

Q. Define Language processor or Translator. Explain different types of Language processors. Language Processors / Translator         Computer directly understands machine language only. That is why Machine language is called the native language of computer. Machine language is in binary form that is its instructions consists of strings of zeros and ones.         A program written in high-level or assembly language cannot be run on a computer directly. Firstly, it is converted into machine language. So there is a need to translate the source program into object code for a computer to execute it.  Definition of Language Processor  Language processor may be defined as a software that converts source programs into object program. Language processor is also called Language Translator.  Therefore, a language translator software will take a source program(that cannot be understood by computer) as input and then will convert it into object code(that can be understood by computer

What is a Program and Programming Language Program A set of instructions that tell a computer what to do is called program. A computer works according to the given instructions in the program. Computer programs are written in programming languages. A person who develops a program is called programmer. Programming Languages A set of words, symbols and codes used to write programs is called programming language. Different programming languages are available for writing different types of programs . With the help of computer language, a programmer tells a computer what to do.   Explain different Types of Programming Languages. There are two main types of computer programming languages. ·         low-level languages ·         high-level languages. Low Level Languages These languages are near to computer hardware and far from human languages. Computer can understand these languages easily. Following are two low-level languages: •      Machine Language •   

Topic: Explain Advantages of CD and DVD and Differences Between CD and DVD  What is CD? CD stands for Compact Disc. Compact Disk or CD is a popular storage device. It is a portable storage device. It can store about 700 MB (Mega Bytes) of data. Advantages of Compact Disk It can store large amounts of different types of data. It can store information in the form of sound, videos, programs or software, pictures and other graphics, documents and many more formats of data. We purchase games and software stored on CDs. CD can store audio/ video songs and videos, too. It is very inexpensive way of storing large amounts of data permanently. It is used for backing up of important data, that can be recovered in future if any data is lost from our PC's hard disk. Compact Disks are easy to use and easy to carry. Compact Disks are durable and reliable. CDs can store data for many years without losing a single byte. Different Types of Compact CDs are: CD-ROM