COMPUTER •
Computer is an electronic device that is used to solve our daily life problems with more accuracy and efficiently Input Processing output.
COMPUTERS OF FIRST GENERATION
1) 2) 3) 4) 5)
MANC ENIAC EDVAC EDSAC UNIVAC
FUNCTIONS OF SYSTEM SOFTWARE i. ii. iii. iv. v.
File manager File compression Diagnostic Utility program Disk Scanner Backup Utility
SCANNER A scanner is very useful input device .You cane save the scanned document as
1. 2. 3. 4.
save as image save as text save as image with text
Optical Character Reader Magnetic Ink Character Reader Mark sense Reader Bar Code Reader