Data transferring process between two or more digital device is called Data Transmission. Normally data is transferred in form of bits between two or more digital device.

There are two types of data transmission-

(i) Serial Data Transmission

(ii) Parallel Data Transmission

When data is transferring in serial data transmission the data bits are send one-by-one, if last data bit has been successfully received then the next data bit will ready for sent. People consider this is credible method for data transmission because every data bit confirm that the last data bit is being received by receiver.

There are two types of Serial Data Transmission....

There are three types of data transmission mode available....

(i) Simplex Mode

(ii) Half-Duplex Mode

(iii) Full-Duplex Mode

Simplex transmission is unidirectional or one-way communication. Information flows in the same direction through the line and cannot go in another direction.

Ex. Television connection

Half-Duplex is two way communication. In this mode the data can go in both directions but at the same time it is not possible.

Ex. Walkie-talkie

It is also two way communication. In this mode data can go in both direction at the same time. 

Ex. Wireless mobile phone

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Input device is a type of hardware that provides some specific instructions for getting specific output. 

There are various types of input device are available in the market for examples keyboard, mouse, scanner, light pen, graphics tablet, microphone, touch screen, barcode reader, digital camera, fingerprint scanner or bio-metric scanner, OMR, MICR, stylus etc.

1. Photoshop is a text package or graphics package?

Ans. Graphics package

2. DOS is a system software or application software?

Ans. System software

3. Antivirus program is system software or utility software?

Ans. Utility software

4. Which is a single user operating system- DOS or Windows?

Ans. DOS

5. Name of two language processor.

Ans. Linker, Loader

6. Which one is database application software?

 (a) PowerPoint

 (b) Notepad

 (c) WordPad

 (d)MS-Access (Correct Answer)

7. What is the work of screen saver?

Ans. Increase the duration time of monitor screen

8. Which is an antivirus program?

  (a) Scandisk

  (b) Paint

  (c) NOD32 (Correct Answer)

  (d)Disk Defragment

9. Who and when first released DOS?

Ans. Microsoft in 1981

10. MD is internal command or external command?

Ans. Internal command

11. Move is internal command or external command?

Ans. External command

12. Maximum zoom in excel..

Ans. 400%

13. Plotter is a input device or output device?

Ans. Output device

14. RAM is a volatile memory or nonvolatile memory?

Ans. Volatile memory

15. Which is a primary memory- RAM or Floppy disk?

Ans. RAM

16. What is the analog signal?
 (a) 0 or 1
 (b) Electromagnetic Wave (Correct Answer)
 (c) Wave
 (d) Text or Graphics

17. Which of the following is sent by fiber optic cable?
 (a) Electrical signal
 (b) Light signal (Correct Answer)
 (c) Magnetic signal
 (d) Electromagnetic signal

18. The computers connected to the network are called..
 (a) Hardware
 (b) Node (Correct Answer)
 (c) Software

19. Antivirus is..
 (a) Graphics Package
 (b) Program Code (Correct Answer)
 (c) Application

20. IP address is..
 (a) Internet Protocol (Correct Answer)
 (b) Internet Provider
 (c) Insert Pin

Computer Basic Questions

21. First computer virus is..
 (a) Brain
 (b) Creeper (Correct Answer)
 (c) Elk Cloner

22. Analog signal is used..
 (a)  For sending text
 (b) For sending graphics
 (c) For voice communication (Correct Answer)
 (d) For sending any type of signal

23. Which is a first generation computer?
 (a) IBM 7000
 (b) PDP-8
 (c) ENIAC (Correct Answer)

24. One byte is equal to..
 (a) 4 bits
 (b) 8 bits (Correct Answer)
 (c) 16 bits
 (d) 32 bits

25. Which type of monitor is used Cathode Ray Tube?
 (a) Monochrome (Correct Answer)
 (b) LCD
 (c) LED

26. Which one is input device?
 (a) Plotter
 (b) MICR (Correct Answer)
 (c) Monitor
 (d) Printer

27. Who is the father of computer?
 (a) Blaise Pascal
 (b) Charles Babbage (Correct Answer)
 (c) Lady Ada Augusta
 (d) Herman Hollerith

28. Who and when invented first mechanical calculator?
Ans. Blaise Pascal in 1642

29. Who was the world's first programmer?
Ans. Lady Ada Augusta

30. What is the first version of windows operating system?
Ans. Windows 1.0

31. Which system file of DOS helps to communicate with the computer's hardware?
Ans. MS-DOS.SYS

32. Linux is a single user operating system or multi-user operating system?
Ans. Multi-user and multi-tasking operating system

33.  What is the command to clear the screen in DOS?
Ans. CLS

34. VER is a internal command or external command in DOS?
Ans. Internal Command

35. Which is a application software?
 (a) Linux
 (b) Windows
 (c) AUTO CAD (Correct Answer)
 (d) Unix

36. What is the command to get from the dos to the windows screen?
 (a) MD
 (b) REN
 (c) EXIT (Correct Answer)
 (d) TYPE

37. What is the base of the binary number system?
 (a) 0
 (b) 1
 (c) 8
 (d) 2 (Correct Answer)

38. 1 KB=..............?
 (a) 4 bit
 (b) 8 byte
 (c) 1024 bit
 (d) 1024 byte (Correct Answer)

39. 1 Nibble=............?
 (a) 8 bit
 (b) 4 bit (Correct Answer)
 (c) 16 bit
 (d) 8 byte

40. One 3.5 inch floppy disk storage capacity is ....................?
 (a) 1.40 KB
 (b) 1.40 MB
 (c) 1.44 MB (Correct Answer)
 (d) 1.44 KB

Computer Basic Questions

41. What is the computer made in combination with analog and digital?

 (a) Digital computer

 (b) Hybrid computer (Correct Answer)

 (c) Super computer

 (d) Mini computer

42. How much bit of a ASCII code?
 (a) 16 bit
 (b) 4 bit
 (c) 16 bit
 (d) 8 bit (Correct Answer)

43. What is a PARAM?
 (a) Hybrid computer
 (b) Super computer (Correct Answer)
 (c) Micro computer
 (d) Mini computer

44. What other name is known to monitor?
 (a) CU
 (b) VDU (Correct Answer)
 (c) CPU
 (d) Printer

45. Which is related to resolution?
 (a) Monitor (Correct Answer)
 (b) Printer
 (c) Speaker
 (d) Memory

46. Which have more capacity to store data?
 (a) Floppy disk
 (b) CD-ROM
 (c) Hard disk (Correct Answer)
 (d) Pen drive

47. Which is not an output device?
 (a) Printer
 (b) Plotter
 (c) Scanner (Correct Answer)
 (d) Monitor

48. When did WWW start?
 (a) 1996
 (b) 1980
 (c) 1991 (Correct Answer)
 (d) 1981

49. Which is not a search engine?
 (a) Google
 (b) Bing
 (c) Linux (Correct Answer)
 (d) Yahoo

50. Which protocol is needed to transfer file?
 (a) FTP (Correct Answer)
 (b) HTTP
 (c) IP
 (d) TCP 



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       Facebook brought a new update to the market. Facebook CEO Mark Zuckerberg said that he will launch a global cryptocurrency which will be known as the Libra. Although Facebook has not yet fully disclosed information about it, as far as it is known, it is described below:

       Finally, Facebook is planning on blockchain. According to Facebook's Executive, Libra will be launch in the market in the middle of next year 2020. It will not be fluctuation like Bitcoin because it will be controlled by an organization known as the Libra Association, and for this reason libra will be considered separately from others cryptocurrency like bitcoin, ethereum, litecoin etc. Facebook has said that where Banking Facility is not so good, it will be launched specifically from there, then gradually spread to the whole world. It can be used for money transfers, things for business purposes and any kind of financial work. People can payment online and offline by using Libra anytime and its fees will be very low. 

Facebook Cryptocurrency Libra

         The company has formed the nonprofit Libra Association with twenty seven other partners to supervise libra and it's development but when it will launch in 2020 it may increase more than 100 partners. The partners are PayPal, Visa, mastercard, ebay, coinbase, stripe, spotify, vodafone, Thrive Capital and more other. An interview has revealed that its headquarters will be in Geneva, Switzerland. Facebook is launching a subsidiary called Calibre, which will help build Libra Blockchain. When it first launches, it will be powered by the only Facebook messenger and WhatsApp and later it will be used in different operating systems and software. Libra’s mission is to enable a simple global currency and financial infrastructure that empowers billions of people.

Conclusion

                   Libra Goal: A stable currency built on a secure and stable open-source blockchain, backed by a reserve of real assets, and governed by an independent association.



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Here you find computer related all full forms.......

A

AC- Alternating Current

AAC- Advanced Audio Coding

ABIOS- Advanced BIOS (Basic Input/Output System)

ABS- Always Better Service

ACE- Access Control Entry

ACK- Acknowledgment

ACL- Access Control List

ACM- Association for Computing Machinery

ACPI- Advanced Configuration and Power Interface

Ad- Advertise
ADB- Android Debug Bridge
ADR- Address
ADSL- Asymmetric Digital Subscriber Line
ADT- Abstract Data Type
AEAP- As Early As Possible
Aero- Authentic, Energetic, Reflective and Open
AES- Advanced Encryption Standard
AF- Auto Focus
AGP- Accelerated Graphics Port
AI- Artificial Intelligence

robot

AIO- All in One
AIX- Advanced Interactive Executive
AJAX- Asynchronous Java script and XML (eXtensible Markup Language)
ALGO- Algorithmic Language
ALU- Arithmetic Logic Unit
Alt- Alternate
AM- Amplitude Modulation
AMD- Advanced Micro Device
AMI- American Megatrends Inc.
Amp-Ampere
AMR- Audio/Modem Riser
ANI- Automatic Number Identification
ANSI- American National Standard Institute
API- Application Programming Interface
APK- Android Package
APM- Advanced Power Management
APT- Advanced Packaging Tool
APU- Accelerated Processing Unit
ARP- Address Resolution Protocol
ARPA- Advanced Research Project Agency
ARPANET- Advanced Research Project Agency Network
ARQ- Automatic Repeat Request
ASCII- American Standard Code for Information Interchange
ASAP- AS Soon As Possible
ASP- Active Server Page
AT- Advanced Technology
ATA- Advanced Technology Attachment
ATM- Automated Teller Machine
ATX- Advanced Technology eXtended
AUP- Acceptable Use Policy
AVI- Audio Video Interleave
AVR- Automatic Voltage Regulator
Av- Antivirus

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

Computer full forms

X

XGA- Extended Graphics Array

XML- Extensible Markup Language

XT- Extended Technology

Y

YB- Yottabyte

Z

ZBR- Zone Bit Recording

1. According to type of data processed
2. Based on purpose of use
3. According to size and efficiency

According to type of data processed:

Computers of this class can be divided into three categories......

 (i) Analog computer   (ii) Digital computer  (iii) Hybrid computer

Analogous signal (analogous mean equivalent) say any signals or waves that are always changing. So we can say any wave of analog if it changes continuously over the time.

That is to say, an analog computer is a computer which is used to measures continuous changing physical quantity and represents in numbers or any sign that is very understandable for human.

speedometer

Examples: voltage, temperature, pressure, height, light intensity, speedometer etc.

Digital computer

A digital computer is a electronics device which is take some data inputs(numbers, alphabet, symbol etc.) and read as binary form '0' or '1' only, after the processing resulted out  in discrete form.

It is different from analog which is discontinuous and analog is continuous like temperature.

Examples: Desktop, laptop, smartwatch, tablet etc.

Hybrid computers are computer compatible with both analog and digital type methods. Hybrid computer uses digital membranes to store intermediate results and uses analog device for mathematical calculation, counting etc. This type of computer can convert the signal analog to digital and digital to analog. Its speed is between analog and digital.

hybrid-computer

Examples: Hybrid computer used in hospital intensive care unit.
Portable computer like modern laptop can be detach keyboard and used as a tablet is a example of hybrid computer.

Based on purpose of use:

Computers of this class can be divided into two categories......

General purpose of computer

Special purpose of computer

According to size and efficiency:

(i) Micro computer (ii) Mini computer (iii) Mainframe computer
(iv) Super computer

Micro computer

Micro computer size is the smallest, the lowest price, the storage capacity is relatively low and uses of peripheral devices less advantage. This type of computer used 8 to 32 bit microprocessor chip. To run this types of computer required less energy.

Ex. PC

Mini computer keeps its CPU, memory and storage unit on a row or rack. This a multi user computer system like mainframe. It is a medium size computer but bigger than micro computer. There is no need for special environment like mainframe. Storage Capacity is more than a micro computer. This types of computer used up to 32 bit microprocessor chip and it's processing speed 500 KIPS (Kilo Instruction Per Second). 

Mainframe computer

mainframe-computer

Super computer

super-computer