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Floppy disk is magnetic technology. CDs are based on physical dimples in the disk surface, or light-reactive ink layers for RW media. Floppies cannot store much at all A CD will hold more than 450 floppies. CDs and floppy disks are both circular - the floppy disk's square shape is a case containing a circular disk.

SET OF INSTRUCTION THAT MADE INTERFACE BETWEEN HUMAN AND MACHINE

What You See Is What You Get 

Data are Simply values which may or may not have any meaningful sense. On the other hand information means meaningful data.

Sometimes abbreviated as SW and S/W, software is a collection of instructions that enable the user to interact with a computer, its hardware, or perform tasks. Without software, computers would be useless. For example, without your Internet browser, you could not surf the Internet or read this page and without an operating system, the browser could not run on your computer.

There are two types of software

1. System Software

eg:- Operating system,driver of devices etc.

2. Application Software

eg:- Microsoft office,browser,photoshop,paint etc

There are many ways to edit files in Unix and for me one of the best ways is using screen-oriented text editor vi. This editor enable you to edit lines in context with other lines in the file.

Now a days you would find an improved version of vi editor which is called VIM. Here VIM stands for Vi IMproved.

The vi is generally considered the de facto standard in Unix editors because −

• It's usually available on all the flavors of Unix system.

• Its implementations are very similar across the board.

• It requires very few resources.

• It is more user friendly than any other editors like ed or ex.

You can use vi editor to edit an existing file or to create a new file from scratch. You can also use this editor to just read a text file.

Advantages and Disadvantages of Flowchart

Advantages Of Using FLOWCHARTS: • Communication: Flowcharts are better way of communicating the logic of a system to all concerned or involved. • Effective analysis: With the help of flowchart, problem can be analysed in more effective way therefore reducing cost and wastage of time. • Proper documentation: Program flowcharts serve as a good program documentation, which is needed for various purposes, making things more efficient. • Efficient Coding: The flowcharts act as a guide or blueprint during the systems analysis and program development phase. • Proper Debugging: The flowchart helps in debugging process. • Efficient Program Maintenance: The maintenance of operating program becomes easy with the help of flowchart. It helps the programmer to put efforts more efficiently on that part

Disadvantages Of Using FLOWCHARTS: • Complex logic: Sometimes, the program logic is quite complicated. In that case, flowchart becomes complex and clumsy. This will become a pain for the user, resulting in a waste of time and money trying to correct the problem • Alterations and Modifications: If alterations are required the flowchart may require re-drawing completely. This will usually waste valuable time.  

A wildcard character is a special character that represents one or more othercharacters. The most commonly used wildcard characters are the asterisk (*), which typically represents zero or more characters in a string of characters, and the question mark (?), which typically represents any one character.

Compiler : It's a computer program(s) that transforms source code written in a programming language into machine language that is the target language which usually has a binary form known as object code. Interpreter : It translates high level instructions into an intermediate form, it translates the code into the intermediate form line by line an caries out specific actions.

sequential access and direct access