DDE (Direct Data Entry)
1)What is DDE?
Ans) There are certain input device. Which
works automatically, which means that they can input data automatically without
any help from the user, that is called DIRECT DATA ENTRY or DDE in short.
2) what is Direct data entry device? With
Example.
Ans) A DDE device are those which can transfer
information automatically from a source document such as a from or bar code
into the computer system. The user does not need manually. Example:.
1) BCR (Bar code reader)
2) OMR (Optical
mark reader
3) MICR (Magnetic ink character reader
4) MSR (Magnetic stick
Reader)
3) what is bar code?
Ans) you much have seen the groups of black vertical stripes, or bars on books, stationery items, food packets, and the boxes of any items we
purchased those are know as bar code.
4)
why we use bar code?
Ans) The
bar code printed on numerous products we buy shops use bar code to maintain
there stop control system. the bar code contented details of the product such
as its name manufacturing date and expire date size weight country of
organizing etc. the price is look of from the Data base on computer when the
bar code is scan the Shop. she is automatically reduce by one.
5)
What is bar code reader?
Ans) A Bar code reader (BCR) is and input device
which is used to read the park wood printed on any item.
6)
Where we find bar code?
Ans)
Bar code are printed on the numbers products we buy that is books stationery
foods market hardware items etc.
7)
what is OMR?
Ans)it
stands for optical mark reader. it readers mark made by pencil or a pen on a
printed from into the computer.
8)
where do OMR Being used?
Ans)
OMR system are suited to reading pre-printed from and check box such as national lottery number selection sheets and multiple choice exam paper, comparative exam,
government exam etc.
9)
what is MICR?
Ans)
It stands for magnetic ink character reader. it is the strange looking number
that appear and the bottom of cheques which are printed using a special magnetic
ink which contents IRON oxide. (Feo3) POS:-
Point of seal( 8 thousand character)
10)
why do ink is magnetized?
Ans)
The ink is magnetized because it makes it immune to create or dirty marks. This
particular font is used because it is easy for a machine to discriminate
between characters.
11)
why do bank use MICR?
Ans)
Bank use a MICR reader to read the numbers from the bottom of cheques. This is
done to obtain data such as account number and bank short.The advantage of this
system is that it is very fast and cuts out humans error.
12)
What is MSR?
Ans)A
card with a magnetic strikes is swiped through a special machine called a
magnetic strike reader the magnetic strike read scan the data storage on the
strike and inputs it into a computer system.
13)
where do we find MS? (Magnetic stripe)
Ans)
we commonly see the magnetic streak on credit card debit card movies ticket any
other smart card at the bank it can hold the personal details of the card
honor with the necessary pin personal information number it will allow access
to secure information bank account details number etc.
14)
what is magnetic stripe?
Ans)
A magnetic street for st pizza short length of magnetic people don the surface
of encoder in a
15)
what does ms content?
Ans)
The magnetic stick usually contents information to identify the ticket or card
or it's owners. Magnetic strike content more data per unit of space then do painted character or
bar code.
16)
What is a smart card?
Ans)
Smart card are a more advance version of magnetic strike card. they have very
thin memory chip sold into them. one card store more than 8 thousand character.
A special cell smart card reader is used to read information on smart card can
store more than 8000 characters. A special smart card reader is use to read
information on smart card.
17) What is micro phone?
Ans) A micro phone is a
device use to input sound information. It works together with a sound card. The
sound input via a microphone is an electrical signal that is converted into
digital from by the help of sound card.
