Skip to main content

Dot matrix printer

Dot  Matrix  Printer
Definition
It is a type of computer printer which uses a print head that moves back and front or in an up and down motions on the page and prints by impact striking and ink soaked cloth ribbon against the paper.

Advantages
Low purchase cost
Low repair cost
Can handle multipart forms Cheap to operate


Disadvantages
Noisy
Low resolution
Color looks faded and streaky

Characteristic

Speed
The speed can vary from about 50 to over 500 cps. Most dot-matrix printers offer different speeds depending on the quality of print desired.

Print Quality

Determined by the number of pins ,it can vary from 9 to 24. The best dot-matrix printers can produce near letter-quality type, although you can still see a difference if you look closely.
 
 









 
 

Comments

Popular posts from this blog

QBASIC Solutions

Q.1) WAP to change degree Celsius into degree Fahrenheit.   => CLS        INPUT "Enter degree celsius value" ; D        F = ( 9 * C / 5 ) + 32        PRINT "Degree Fahrenheit value = "; F        END Q.2) WAP to change dollar into Nepali currency.   => CLS       INPUT "Enter Dollar value"; USD        NRS = USD * 100       PRINT "Nepali currency value = "; NRS       END Q.3) WAP to change Indian currency into Nepali currency. => CLS                   INPUT "Enter Indian currency value"; IC       NRS = IC * 1.6        PRINT "Nepali currency value = "; NRS   ...

17 QBASIC Programming

1. Create a sequential file "std.dat" to store name and marks obtained in English, Math and Science subjects for a few students. (74 set 1) OPEN   “std.dat”   FOR OUTPUT   AS   #1 DO CLS INPUT “Enter name “; N$ INPUT   “Enter English marks”; E INPUT “Enter Math's marks"; M INPUT "Enter Science marks"; S WRITE #1, N$, E, M, S INPUT "Do you want to continue (Y/N)";CH$ LOOP WHILE UCASE$ (CH$) "Y" CLOSE #1 END 4.   WAP to add some more   records in a data file “ABC.DAT” having following fields : patient’s name, address and age.  OPEN   “ABC.DAT”   FOR OUTPUT   AS   #1 DO CLS INPUT “Enter Patients name “; N$ INPUT   “Enter patients address”; A$ INPUT “Enter Patient's age "; A WRITE #1, N$, A$, A INPUT "Do you want to continue (Y/N)";CH$ LOOP WHILE CH$="Y" OR CH$="y" CLOSE #1 END       6.WAP to store records regarding the information of book’s number, name and author’s ...

SLC Examination 2070

SLC Examination 2070 (2014) RE 1. Answer the following questions. a) What is network topology ? Write any one advantage of star topology. => The arrangement or connection pattern of computers or nodes and other devices of the network is called network topology. Advantage of star topology is it is easy to detect errors . b) Give any two advantages of e-mail over traditional mail. => Advantages It is very fast compare to traditional mail. It allows to send and receive message across the world. c) List any two main aims of formulating cyber law in Nepal. => Two main aims of formulating cyber law in Nepal are: Provides punishment who conducts cyber crime Provides legal status for various banking transaction through electronic media, which will be instrumental in boosting economic activities throughout the world via internet. d) Give any two symptoms of virus attack. => Two symptoms of virus attack  Program takes long...