Practice questions ???????????

1. what are the four basic functions perfomed by the computer ?

2. what is scanner ?

3. choose the correct answer ?

(a) The task of performing arithmetic and logical operations is performed by -:

            (i) ALU       (ii) editor     (iii) storage      (iv) output

(b) The ALU and CU are jointly know as :

            (i) RAM   (ii)  ROM   (iii)  CPU   (iv) none of the above.