Photoelectric (Optical)scanners That Translate the Symbols in Bar Codes into Digital

Q2: How does a keyboard work?

Q3: _ is a microchip technology used to

Q4: What causes computer vision syndrome (CVS)?

Q5: Data entered into a computer using a

Q6: To have multimedia output,one must have several

Q8: A terminal that consists of a display

Q9: What is the difference between frame-grabber video

Q10: Which kind of device reads the numbers

Q11: _ consists of photographic images,which are played

Q12: What are the advantages of multifunction printers?