List any four differences between the present computers and the pre-electronic age computers.
Answer:
-Present computers use electricity as the source of power while pre-electronic age computers used steam as source of power.
-Present computers use both printouts and softcopy output while pre-electronic age
computers relied on printouts only for output.
-Present computers use various types of input devices while pre-electronic age computers used
punched cards for input.
-Present computers are smaller in size than the pre-electronic age computers.
-Present computers store data within their memory while pre-electronic age computers could not store data within them.