computer science

Question 1

ICT?

Answer 1

Technology has made the field of information and communication more progressive and advanced. Stands for Information and Communication Technology.

Question 2

functions of ICT

Answer 2

• used for communication and information we get.
• contributes to universal access to education.
• helps to deliver quality education in the form of teaching and learning contributing to efficient education management.
• helps students and teacher to increase their overall development

Question 3

ATM?

Answer 3

ATMs are Automated Teller Machines in which we can withdraw money, check our balance, print mini statements, and deposit funds.

Question 4

where was the first atm setup?

Answer 4

London by Barclays Bank in 1967 ad made by John Shepherd Barron.

Question 5

which bank introduced the atm in Nepal?

Answer 5

Himalayan bank Ltd. in 1995 AD

Question 6

advantages of ATM?

Answer 6

• PROVIDES QUICK SERVICES
• PROVIDES 24HR SERVICES WITHOUT ANY DISTURBANCE.
• CASH CAN BE WITHDRAWN AT ANY TIME WITHOUT ANY HELP OF THE BANK
• PROVIDES DETAILS OF CASH WITHDRAWAL AND ACCOUNT BALANCE.

Question 7

DISADVANTAGES OF ATM?

Answer 7

• DIFFICULT TO PROVIDE ATM SERVICES IN REMOTE AREAS.
• DUE TO LEAKAGE OF PIN AND LOSS OF ATM CARS, MISUSE CAN TAKE PLACE.
• DUE TO THE LIMITS OF CASH AND THE NUMBER OF TRANSACTIONS, ONLY A LIMITED AMOUNT CAN BE WITHDRAWN.
• ALTHOUGH NOMINAL, BANKS CAN CHARGE A FEE ON EVERY TRANSACTION AT THE ATM.

Question 8

PHOTOCOPY ?

Answer 8

TO MAKE A PHOTOGRAPHIC COPY OF A DOCUMENT BY A PARTICULAR MACHINE CALLED PHOTOCOPY MACHINE.

Question 9

PHOTOCOPY MACHINE

Answer 9

IT IS THE MACHINE WHICH IS USED TO MAKE A PHOTOGRAPHIC COPY OF A DOCUMENT. It works with the help of the light emitted by electricity within the machine.

Question 10

advantages of photocopy machines.

Answer 10

• it can help us make 100 pages of duplicate copies in very little time at a cheap rate.
• the machine can scan and print selected pictures or texts.
• it is user-friendly bc the user can turn on the machines, just place the paper and push a button and both sides of the paper can be used to print.
• it is easy to use and does not require any technicians.

Question 11

disadvantages of photocopy machine

Answer 11

• the machine is very costly.
• it can leak information easiy so, it is not very safe.
  it creates noise pollution.
• it consumes a lot of power.

Question 12

scanner

Answer 12

an input device which captures images for a particular source, converts it into the digital format and transfers to the computer. types of scanner: handheld scanner, film scanner, flatbed scanner, etc

Question 13

printer

Answer 13

A device through which we can get the hard copy of what we want. types of printer: impact printer and non-impact printer.

Question 14

impact printer and its types and short description

Answer 14

a type of printer that works by direct contact of an ink ribbon with paper. Cheap in price and used for low-quality printing in schools, banks, departmental stores. examples:
dot matrix printer- prints using a fixed number of pins which are typically arranged in several vertical columns.
Daisy wheel printer - produces output using the printer head composed of letters, numbers and symbols.
line printer- prints the entire line at a time.

Question 15

non-imapct printer and its examples w description

Answer 15

Forms characters and images without striking on the ribbon or paper. Faster and quieter. Produce better quality output.
- inkjet printers: prints images and characters with the help of cartridges.
Laser printers: high-quality printer which prints texts and graphics with high resolutions.

Question 16

Why is a laser printer known as a page printer?

Answer 16

it processes and stores entire pages to write.