Question 1

A byte of data consist of how many bits?
a) 1 bit
b) 4 bits
c) 8 bits
d) 16 bits
e) Have not heard of this phrase before

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Question 2

What is the decimal equivalent of the binary number 00101010₂? (Avoid using calculator conversions)
a) 3
b) 42
c) 84
d) 101,010
e) I have no idea how to interpret binary numbers

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Question 3

What is the decimal equivalent of the hexadecimal number 2A₁₆? (Avoid using calculator conversions)
a) 12
b) 30
c) 41
d) 42
e) I have not come across hexadecimal notation before

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Question 4

What is the hexadecimal equivalent of the decimal number 46₁₀? (Avoid using calculator conversions)
a) 2.14₁₆
b) 2E₁₆
c) 31₁₆
d) 70₁₆
e) I really wish I knew, but I do not know how to convert numbers to hex equivalent

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Question 5

Which of the gate below will have a LOW output when any of its inputs is HIGH?

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Question 6

Which of the following is the truth table of a tri-state inverter?

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Question 7

A memory device is said to be able to store 1 megabits of data. How many bits of data is actually contained in that device?
a) 1
b) 1,024
c) 1,000,000
d) 1,048,576
e) I am not familiar with terminologies such as kilo, mega and gila (or was it giga)

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Question 8

Memory system requires different input and output lines to perform the following functions:

1. Select the address in memory that is being accessed.
2. Select either a READ or WRITE operation to be performed.
3. Supply the input (or output) data to be stored in (or read from) memory during WRITE (or READ) operation.
4. ENABLE(or DISABLE) the memory so that it will (or will not) respond to the address inputs and read/write command.

Select the combination which will make the statement above correct.
a) 1
b) 1 and 2
c) 1, 2 and 3
d) All of the above
e) Really no idea, I was sleeping during my CE102 lectures on memories

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Question 9

The circuit shown above is essentially a
a) 4-bit register
b) 4-bit adder
c) 4-bit counter
d) 4-bit microprocessor
e) Looks familiar but I can't remember

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Question 10

: D=10; WHILE (D > 0) DO { D=D-1; } :

With reference to the segment of C code given above, how many times will the D=D-1 instruction be executed?
a) 0
b) 1
c) 9
d) 10
e) I have no idea, programming is my worst nightmare

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Question 11

How many bits (binary digits) are required to represented the hexadecimal number ABCD EF01₁₆?
a) 4
b) 8
c) 16
d) 32
e) I am always confused by hexadecimal notation

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Question 12

Which of the two's complement binary number below is negative?
a) 0001₂
b) 0000₂
c) 0111₂
d) 1000₂
e) I have no idea how the sign of a number is encoded in two's complement notation

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Question 13

Two binary numbers A and B have values 1111 1111₂ and 1111₂, respectively. If these numbers are treated as signed two's complement numbers, which statement below is true?
a) A = B
b) A > B
c) A < B
d) A - B = 1111 0000₂
e) I have no idea how to interpret signed two's complement numbers of varying sizes

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Question 14

What is the result of the addition of the two's complement binary numbers 1101₂ and 0011₂ ?
a) 0000₂
b) 1000₂
c) 1110₂
d) 1111₂
e) I do not know how to add binary numbers

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Question 15

What is the result of 01001₂ - 11100₂ if both these numbers are signed two's complement numbers?
a) 00101₂
b) 00011₂
c) 01101₂
d) 10010₂
e) I do not know how to subtract two's complement numbers

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