Showing posts with label Computer. Show all posts
Showing posts with label Computer. Show all posts

Types of Monitors!

 

Types of Monitors:

There are three types of computer monitors, such as:
➤ Liquid Crystal Display (LCD)
➤ Cathode Ray Tube (CRT)
➤ Light Emitting Diode (LED)
Liquid Crystal Display (LCD):
The LCD monitor incorporates one of the most advanced technologies available today. Typically, it consists of a layer of color or monochrome pixels arranged schematically between a couple of transparent electrodes and two polarizing filters. Optical effect is made possible by polarizing the light in varied amounts and making it pass through the liquid crystal layer.
The advantages of LCD monitors include their compact size which makes them lightweight. They also don’t consume much electricity as CRT monitors, and can be run off of batteries which makes them ideal for laptops.
Cathode Ray Tube (CRT):
These monitors employ CRT technology, which was used most commonly in the manufacturing of television screens. With these monitors, a stream of intense high energy electrons is used to form images on a fluorescent screen. A cathode ray tube is basically a vacuum tube containing an electron gun at one end and a fluorescent screen at another end.
Light Emitting Diode (LED):
LED monitors are the latest types of monitors on the market today. These are flat panel, or slightly curved displays which make use of light-emitting diodes for back-lighting, instead of cold cathode fluorescent (CCFL) back-lighting used in LCDs. LED monitors are said to use much lesser power than CRT and LCD and are considered far more environmentally friendly.

Define YouTube!

 

YouTube:

YouTube is a video sharing service that allows users to watch videos posted by other users and upload videos of their own. The service was started as an independent website in 2005 and was acquired by Google in 2006. Videos that have been uploaded to YouTube may appear on the YouTube website and can also be posted on other websites, though the files are hosted on the YouTube server.

Define Yahoo!

 
Yahoo!:
Yahoo! is a web services provider headquartered in Sunnyvale, California and owned by Verizon Communications through Oath Inc. The original Yahoo! company was founded by Jerry Yang and David Filo in January 1994 and was incorporated on March 2, 1995. Yahoo was one of the pioneers of the early Internet era in the 1990s. At its height it was one of the most popular sites in the United States.

Monthly Exam Question Pattern for New First Year

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Monthly Exam Question Pattern for New First Year:


Total Mark - 25
Time - 2 Hours

Answer Any Five From Eight Questions
All Questions Carry Five Marks
Pass Marks- 15
1)
2)
3)
4)
5)
6)
7)
8)


Syllabus/Suggestion:

  • Chapter 1
  • Draw the block Diagram of a Computer System
  • Convert Binary to Decimal
  • Convert Decimal to Binary
 
 

Mention some Advantages and Functions of Word processing and Spreadsheet package programs?

 
Chapter: 8 | Question: 6

The Advantages of Word Processing: 

❶ It is faster and easier than writing by hand.
❷ You can store documents on your computer, which you cannot do on a typewriter.
❸ You can review and rewrite your documents.
❹ There are more formatting choices with a word processor (the spelling, grammar and language tools).
❺ You can print copies of your documents.
❻ Spell and grammar checking.
❼ Copies can easily be made, which saves on printing and it is much easier to do.

The Functions of Word Processing: 

❶ Create documents.
❷ Editing.
❸ Sharing.
❹ Comparing.
❺ Webpages

The Advantages of Spreadsheet package: 

❶ Organizing Data
❷ Calculations and Errors
❸ User Access.
❹ Security
❺ Graphical Displays of Data
❻ Preset Functions
❼ Editing

The Functions of Spreadsheet package:

❶ SUM
❷ AVERAGE
❸ MAX
❹ MIN



What is the difference between cut paste and copy paste operation in MS Word?

 
Chapter: 8 | Question: 5

 Difference between cut paste and copy paste operation in MS Word: 

Cut Paste: Cut removes information from its original location and relocates it when you use paste. If you cut information and do not paste it your information is lost.

Copy Paste: Copy do not remove information from its original location and relocates it when you use paste. If you copy information and do not paste it your information is lost. It creates same information.

What are the important features of Microsoft Excel?

 
Chapter: 8 | Question: 4

Feature of Microsoft Excel: 

❶ Data entry can be automated and checked for errors.
❷ Easy editing.
❸ The column & row format are easy to understand & use.
❹ Formulas perform calculation and are saved with spread sheet.
❺ One can sort copy & moved columns & rows with formulas intact.
❻ One can print a spreadsheet in a variety of formats.
❼ Built in a graph generator to create graphs from the data in a spreadsheet.





Also Read: What is Microsoft Excel?

What are the important features of Microsoft Word?

 
Chapter: 8 | Question: 3

Feature of Microsoft Word: 

❶ Creating new documents with different formatting.
❷ Save the document on disk for future use.
❸ Preview the document on monitor before to get a hard copy.
❹ Open the existing document for editing.
❺ Set the margins of document and line spacing.
❻ Underline text, bold face text, setting size of text etc.
❼ Images can be inserted into the document.




Also Read: What is Microsoft Office? 

What is Microsoft Office package?

 
Chapter: 8 | Question: 1 

Microsoft Office package:

Microsoft office is a desktop application for windows. It is a suite of products developed by Microsoft Corporation that Microsoft word, Excel, Access, Publisher, PowerPoint and outlook. Each program serves a different purpose and is compatible(উপযুক্ত)with other programs included in the package.

 

What is Database?

 

Database:

⏩ A database is a data structure that stores organized information. Most databases contain multiple tables, which may each include several different fields.

⏩ A database is a collection of information that is organized so that it can be easily accessed, managed and updated.

➲ For example, a company database may include tables for products, employees, and financial records. Each of these tables would have different fields that are relevant to the information stored in the table.




Also Read: What is Data? | What is Information?

What is Information?

 

Information:

⏩ Information is organized or classified data, which has some meaningful values for the receiver. Information is the processed data on which decisions and actions are based.

For the decision to be meaningful, the processed data must qualify for the following characteristics −

   ➲ Timely − Information should be available when required.
   ➲ Accuracy − Information should be accurate.
   ➲ Completeness − Information should be complete.

What is Data?

 

Data:

⏩ Computer data is information processed or stored by a computer. This information may be in the form of text documents, images, audio clips, software programs, or other types of data. Computer data may be processed by the computer's CPU and is stored in files and folders on the computer's hard disk.

Data is represented with the help of characters such as alphabets (A-Z, a-z), digits (0-9) or special characters (+,-,/,*,<,>,= etc).

What is ROM?

 

Define ROM:

⏩ Short for Read-Only Memory, ROM is a storage medium that is used with computers and other electronic devices. As the name indicates, data stored in ROM may only be read. It is either modified with extreme difficulty or not at all. ROM is mostly used for firmware updates. A simple example of ROM is the cartridge used with video game consoles, which allows one system to run multiple games. Another example of ROM is EEPROM, which is a programmable ROM used for the computer BIOS, as shown in the picture below.

What is RAM?

 

Define RAM:

Random access memory (RAM) is a type of data storage used in computers that is generally located on the motherboard. This type of memory is volatile and all information that was stored in RAM is lost when the computer is turned off. Volatile memory is temporary memory while ROM (read-only memory) is non-volatile and holds data permanently when the power is turned off. 

There are two main types of RAM:

⏩ Dynamic random access memory (DRAM), or Dynamic RAM
⏩ Static random access memory (SRAM).

Generations of Computers?

 

The Five Generations of Computers:

⏩ First Generation: Vacuum Tubes (1940-1956)

⏩ Second Generation: Transistors (1956-1963)

⏩ Third Generation: Integrated Circuits (1964-1971)

⏩ Fourth Generation:  Microprocessors (1971-Present)

⏩ Fifth Generation: Artificial Intelligence (Present and Beyond)