A Level - Computer Science - 16 - Exam Style Questions with Answers

Created on March 29, 2023 By

paruppts12

ALVL_GEN_CS_1_THRY_16

1 / 10

10101100

10101101

10111100

10101110

2 / 10

Identify the immediate addressing mode to the following description.

Form the address by adding the given number to a base address. Load the contents of the calculated address to the Accumulator (ACC).

Load the contents of the given address to ACC.

Load the contents of the address held at the given address to ACC.

Load the given value directly to ACC.

3 / 10

Convert the unsigned binary number 0101 1111 1100 into denary.

1533

1534

1531

1532

4 / 10

Convert the two’s complement number 0110 0101 into denary.

104

103

101

102

5 / 10

Identify the indirect addressing mode to the following description.

Form the address by adding the given number to a base address. Load the contents of the calculated address to the Accumulator (ACC).

Load the given value directly to ACC.

Load the contents of the given address to ACC.

Load the contents of the address held at the given address to ACC.

6 / 10

Convert the denary number 222 into hexadecimal.

AE

DE

CE

BE

7 / 10

Convert the denary number −239 into 12-bit two’s complement.

1010 1010 1010

1110 1110 1110

1100 1100 1100

1111 0001 0001

8 / 10

Identify the relative addressing mode to the following description.

Form the address by adding the given number to a base address. Load the contents of the calculated address to the Accumulator (ACC).

Load the given value directly to ACC.

Load the contents of the address held at the given address to ACC.

Load the contents of the given address to ACC.

9 / 10

Convert the Binary Coded Decimal (BCD) value 0110 0101 into denary.

64

65

63

62

10 / 10

Identify the line number of the JavaScript code that takes data the user has input and stores it in a variable.

11

14

12

13

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