1. How many bytes are there in :

** 1111 1011 0111 0100 1010**

(a) 2

(b) 3

(c) 2½

(d) 3½

2. In computers, subtraction is generally carried out by :

(a) 9’s complement

(b) 10’s complement

(c) 1’s complement

(d) 2’s complement

3. An 8-bit LED display is shown in figure below. A white circle means that a LED in ON (**binary 1**) and a red circle means a LED is OFF (**binary 0**). What is the decimal equivalent of the binary number displayed ?

4. The number of bits needed to encode all letters(**26**), symbols(**10**) and all numerals(**10**) is :

(a) 4

(b) 5

(c) 6

(d) 7

5. What is the octal equivalent of the binary number :

** 10111101**

(a) 675

(b) 275

(c) 572

(d) 573

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