Test Mode
Reading Mode
Right = 0
Wrong = 0
তথ্য প্রযুক্তি
output 1 if any input is 1
output 1 if all inputs are 1
output 0 if any input is 1
Liquid crystalled document
have nothing recorded on them
permanently stores information without program
are erasable y special program
are erasable electrically
records data very fast without instruction