Speed It refers to the speed of computation. It can perform a task in seconds and speed is measured in microseconds and nanoseconds.
Accuracy It is precision with which calculations are done. A computer maintains high degree of accuracy provided there is no human mistake i.e. faulty programming or inaccurate dates.
Consistency A computer can work for hours without lack of concentration or emotional feelings. It does not get tired and will do the jobs with same speed and accuracy.
Versatility A computer can perform various types of jobs like it can do scientific calculation, make drawings, etc. It can change over to various types of jobs within a very short span of time.
Remembrance power A computer has permanent storage device where each and every piece of information can be retained for a long period.
Lack of IQ IQ means Intelligence Quotient or intelligence to take decisions. A computer can only perform operations programmed or instructed by a person.
Malfunction Computers are subject to occasional breakdown or malfunction as other machines.
Wrong output Wrong instructions cannot be corrected so; wrong input results in wrong output.
No feelings since computer is a machine it is free from emotional and sentimental feelings.