Computer || Class-9 || Exercise Solutions!!

 I) Fill in the blanks:-

1) Mouse was invented by Douglas Engelbart.

2) MICR code consists of 9 digits.

3) Diameter of a CD is 120mm.

4) ALU, CU and MU are the functional elements of CPU.

5) Magnetic strips are found on the back side of the debit/credit card.

II) Multiple choice questions:-

a) Which of the following is also know as 'Winchester Disk'

i) Hard Disk.    ii) CD.   iii) Flash Memory.  iv) Pen Drive