Shorts Questions Answers.

1. Classify the computers on the basis of size. [5]

Different types of computer on the basis of size are:

  • Super computer
  • Mainframe computer
  • Mini computers
  • Micro computers

Super Computer

It is the fastest in terms of processing speed. It is the most expensive among all types of computer, it cost around 15-20 million dollars. It is usually hybrid and special purpose computer. It requires high skilled experts to operate a super computer. Its application area includes: scientific research, controlling rockets and satellites, nuclear reactions, weather forecasting. Example: CRAY, ANURAG, PARAM.

Mainframe Computer

It is the largest computer on the basis of size. It occupies around 100 sq. ft area. It contains around 100 I/O terminals. It has large storage capacity. It is used for storing large amount of data, large volume processing and supporting large number of users at a same time. It is used by large bank, university, e-mail provider and website providers. Example: CYBER 170, IBM 1401.

Mini Computer

It is smaller in size than mainframe. It occupies around 100 sq. ft. It contains around 50 I/O terminals. It is slower, cheaper and has lower storage capacity than mainframe. It supports less number of users and  requests at a time as compared to mainframe. It is mainly used by medium sized organization with limited amount of data to be stored and less number of user to support such as medium sized bank, business organization, college, insurance company. Example: MAGNUM, HCL Mini.

Micro Computer

It is the smallest computer on the basis of size. It has single I/O terminal, so it is developed for a single user. It has least storage capacity, slowest processing speed and cheapest cost. It can be portable or non-portable. It is used for personal use such as creating documents, accessing Internet, small scale processing, entertainment, communication. Example: Desktop PC, Laptop.


2. Explain the advantages of mobile computing.

The advantages of mobile computing are:

  • It enables users to work from any location at any time.
  • It saves time of accessing data and information.
  • It helps to increase productivity of employees to enable them to work from any location.
  • It has made research easier.
  • It is one of the major sources of entertainment at present.
  •  Business processes are now easily available through secured mobile connections.
  • It is portable.
  •  It supports cloud computing.
  • It provides remote access to the organizational data from any location.
  • It is platform independent. It can be accessed from any hardware or software.

3. List out the major features of mobile computing.[5]

Major features of mobile computing are:

  • It is a portable device that can be used during mobility.
  • It has limited processing and storage capability.
  • It includes mobile communication, mobile hardware and mobile software.
  • It usually contains touch screen for providing input.
  • Most of the mobile computing devices contain memory card slot to expand the storage capacity.
  • It has wireless connectivity such as Bluetooth and Wi-Fi to connect the Internet or with other computing device as well as wired connection through USB port.
  • Most mobile computing device can synchronize their data with applications on users’ computer.
  • It can be used for cloud computing and remote access It uses mobile computing operating system such as Android, iOS, Windows Mobile OS, Palm OS.
  • It can include GPS (Global Positioning System) receiver for navigation.

4. Describe the Mainframe computer in detail. [5]

Mainframe computer is the largest computer on the basis of size. It occupies around 100 sq. ft area. It contains around 100 I/O terminals. It has large storage capacity. It is used for storing large amount of data, large volume processing and supporting large number of users at a same time. The processing speed of mainframe computer is slower than super computer but faster than mini computer and micro computer.

Mainframe is a data processing system employed mainly in large organizations for various applications, including bulk data processing, process control, industry and consumer statistics, enterprise resource planning, and financial transaction processing. Mainframes use proprietary operating systems, most of which are based on UNIX, and a growing number on Linux. It is used by large bank, university, e mail providers and website providers. Example: CYBER 170, IBM 1401.


5. Describe the major features of super computer.

Major features of super computer are:

  • It is the fastest in terms of processing speed.
  • It is capable of handling huge amount of calculations that are beyond human capabilities.
  • It uses RISC (Reduced Instruction Set Computer) processors.
  • This computer uses parallel processing for faster calculation.
  • It is the most expensive among all types of computer, it cost around 15-20 million dollars.
  • Due to its high cost and size, it is relatively rare.
  • It is usually hybrid computer.
  • It is a special purpose computer.
  • It requires high skilled experts to operate a super computer.
  • Application area of super computer includes: scientific research, controlling rockets and satellites, nuclear reactions, weather forecasting.
  • Example: CRAY, ANURAG, PARAM

6. Give the advantages and disadvantages of Mobile Technology.

Advantages of mobile technology are:

  • It enables users to work from any location at any time.
  •  It saves time of accessing data and information.
  • It helps to increase productivity of employees to enable them to work from any location.
  • It has made research easier.
  • It is one of the major sources of entertainment at present.
  •  Business processes are now easily available through secured mobile connections.
  • It is portable.
  •  It supports cloud computing.
  • It provides remote access to the organizational data from any location.
  • It is platform independent. It can be accessed from any hardware or software.

Disadvantages of mobile technology are as follows:

  •  Mobile technology requires faster or quality connectivity service.
  •  It has security concerns, most wireless connectivity are unsafe.
  • Larger power consumption, use of batteries and they do not tend to last long.
  • Danger of misrepresentation i.e. credential verification is a problem.
  • Extensive use of mobile device result in health problem.

Long Questions Answers.

1. Explain the major features of mobile computing  and the advantages of mobile computing.

The advantages of mobile computing are:

  • It enables users to work from any location at any time.
  • It saves time accessing data and information.
  • It helps to increase productivity of employees to enable them to work from any location.
  • It has made research easier.
  • It is one of the major sources of entertainment at present.
  •  Business processes are now easily available through secured mobile connections.
  • It is portable.
  •  It supports cloud computing.
  • It provides remote access to the organizational data from any location.
  • It is platform independent. It can be accessed from any hardware or software.

Major features of mobile computing are:

  • It is a portable device that can be used during mobility.
  • It has limited processing and storage capability.
  • It includes mobile communication, mobile hardware and mobile software.
  • It usually contains a touch screen for providing input.
  • Most of the mobile computing devices contain memory card slots to expand the storage capacity.
  • It has wireless connectivity such as Bluetooth and Wi-Fi to connect the Internet or with other computing devices as well as wired connection through USB port.
  • Most mobile computing devices can synchronize their data with applications on users’ computers.
  • It can be used for cloud computing and remote access. It uses mobile computing operating systems such as Android, iOS, Windows Mobile OS, Palm OS.
  • It can include a GPS (Global Positioning System) receiver for navigation.

2. Discuss the computers on the basis of size.

Different types of computer on the basis of size are:

  • Supercomputer
  • Mainframe computer
  • Mini computers
  • Micro computers

Supercomputer

It is the fastest in terms of processing speed. It is the most expensive among all types of computer, it cost around 15-20 million dollars. It is usually a hybrid and special purpose computer. It requires high skilled experts to operate a super computer. Its application area includes: scientific research, controlling rockets and satellites, nuclear reactions, weather forecasting. Example: CRAY, ANURAG, PARAM.

Mainframe Computer

It is the largest computer on the basis of size. It occupies around 100 sq. ft area. It contains around 100 I/O terminals. It has a large storage capacity. It is used for storing large amounts of data, large volume processing and supporting a large number of users at the same time. It is used by large banks, universities, email providers and website providers. Example: CYBER 170, IBM 1401.

Mini Computer

It is smaller in size than the mainframe. It occupies around 100 sq. ft. It contains around 50 I/O terminals. It is slower, cheaper and has lower storage capacity than the mainframe. It supports less number of users and  requests at a time as compared to mainframe. It is mainly used by medium sized organizations with limited amounts of data to be stored and less number of users to support such as medium sized banks, business organizations, college, insurance companies. Example: MAGNUM, HCL Mini.

Micro Computer

It is the smallest computer on the basis of size. It has a single I/O terminal, so it is developed for a single user. It has the least storage capacity, slowest processing speed and cheapest cost. It can be portable or non-portable. It is used for personal use such as creating documents, accessing the Internet, small scale processing, entertainment, communication. Example: Desktop PC, Laptop.


3. Differentiate between analogue and digital computer.

Analog Computer

 

Digital Computer

 

  • It operates on continuous data like temperature, speed, pressure.
  • It operates by measuring and comparing.
  • It generates output as a continuous wave by plotting values.
  • It is a special purpose computer.
  • Its accuracy is low.
  • It has either very low or no storage capacity.
  • It cannot be reprogrammed.
  • It is usually cheaper.
  • Example: Presley
  • It operates on discontinuous data like 0 and 1.
  • It operates by counting and calculation.
  • It generates output after complete computation.
  • It is a general purpose computer.
  • Its accuracy is high.
  • It usually has high storage capacity.
  • It can be reprogrammed.
  • It is usually expensive.
  • Example: Desktop PC

4.  Describe Mainframe Computer in detail.

Mainframe computer is the largest computer on the basis of size. It occupies around 100 sq. ft area. It contains around 100 I/O terminals. It has a large storage capacity. It is used for storing large amounts of data, large volume processing and supporting a large number of users at the same time. The processing speed of mainframe computers is slower than supercomputers but faster than minicomputers and microcomputers.

Mainframe is a data processing system employed mainly in large organizations for various applications, including bulk data processing, process control, industry and consumer statistics, enterprise resource planning, and financial transaction processing. Mainframes use proprietary operating systems, most of which are based on UNIX, and a growing number on Linux. It is used by large banks, universities, email providers and website providers. Example: CYBER 170, IBM 1401.

Also Read: Chapter 1: Introduction and Evolution of Computer


5. write the  advantages and disadvantages of Mobile Technology.

Advantages of mobile technology are:

  • It enables users to work from any location at any time.
  •  It saves time accessing data and information.
  • It helps to increase productivity of employees to enable them to work from any location.
  • It has made research easier.
  • It is one of the major sources of entertainment at present.
  •  Business processes are now easily available through secured mobile connections.
  • It is portable.
  •  It supports cloud computing.
  • It provides remote access to the organizational data from any location.
  • It is platform independent. It can be accessed from any hardware or software.

Disadvantages of mobile technology are as follows:

  •  Mobile technology requires faster or quality connectivity service.
  •  It has security concerns, most wireless connectivity is unsafe.
  • Larger power consumption, use of batteries and they do not tend to last long.
  • Danger of misrepresentation i.e. credential verification is a problem.
  • Extensive use of mobile devices result in health problems.


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