WeCP Computer Fundamentals Quiz 1

 bit is the smallest unit of information.

11011 in binary

       = 2^4+2^3+2^1+2^0

       = 16+8+2+1

       = 27

Ans : A

Explanation : Red. Blue and Green are used to make any color pixel on the screen.

Decimal equivalent of "1" = 1 × 16^0 = 1

Decimal equivalent of "F" = (F) 15 × 16^1 = 240

Decimal equivalent of "F" = (F) 15 × 16^2 = 3840

Decimal equivalent of "1" = 1 × 16^3 = 4096

Decimal equivalent of "1FF1" = 4096+3840+240+1

1FF1 = 8177

Ans : D

Explanation : VDU is an Output hardware device.

Decimal equivalent of A: 10*16^3=40960

Decimal equivalent of B: 11*16^2=2816

Decimal equivalent of C: 12*16^1=192

Decimal equivalent of D:13*16^0=13

Decimal equivalent of ABCD = 43981

Decimal equivalent of "B" = (B) 11 × 16^0 = 11

Decimal equivalent of "A" = (A) 10 × 16^1 = 160

Decimal equivalent of "8" = 8 × 16^2 = 2048

Decimal equivalent of "8AB" = 2048+160+11

8AB = 2219

 

Decimal equivalent of "8" = 8× 16^0 = 8

Decimal equivalent of "7" = 7 × 16^1 = 112

Decimal equivalent of "B" = 11× 16^2 = 2816

Decimal equivalent of "B78" = 2816+112+8

B78= 2936

8AB+B78=5155

Ans : D

Explanation : Light Pen is an Input device.

.txt is the default file extension created by notepad.

.xls is the default file extension created by PowerPoint