CSI106

1. The _______ model is the basis for today's computers.

a. Leibnitz

b. von Neumann

c. Pascal

d. Charles Babbage

b. von Neumann

2. In a computer, the _______ subsystem stores data and programs.

a. ALU

b. input/output

c. memory

d. control

c. memory

3. In a computer, the _______ subsystem performs calculations and logical operations.

a. ALU

b. input/output

c. memory

d. control unit

a. ALU

4. In a computer, the _______ subsystem accepts data and programs and sends processing results to output devices.

a. ALU

b. input/output

c. memory

d. control unit

b. input/output

5. In a computer, the _______ subsystem serves as a manager of the other subsystems.

a. ALU

b. input/output

c. memory

d. control unit

d. control unit

6. According to the von Neumann model, _______ are stored in memory.

a. only data

b. only programs

c. data and programs

d. neither data nor programs

c. data and programs

7. A step-by-step solution to a problem is called _______.

a. hardware

b. an operating system

c. a computer language

d. an algorithm

d. an algorithm

8. FORTRAN and COBOL are examples of _______.

a. hardware

b. operating systems

c. computer languages

d. algorithms

c. computer languages

9. A 17th-century computing machine that could perform addition and subtraction was the _______.

a. Pascaline

b. Jacquard loom

c. Analytical Engine

d. Babbage machine

a. Pascaline

10. _______ is a set of instructions in a computer language that tells the computer what to do with data.

a. An operating system

b. An algorithm

c. A data processor

d. A program

d. A program

11. _______ is the design and writing of a program in structured form.

a. Software engineering

b. Hardware engineering

c. Algorithm development

d. Instructional architecture

a. Software engineering

12. The first electronic special-purpose computer was called _______.

a. Pascal

b. Pascaline

c. ABC

d. ENIAC

c. ABC

13. One of the first computers based on the von Neumann model was called _______.

a. Pascal

b. Pascaline

c. ABC

d. EDVAC

d. EDVAC

14. The first computing machine to use the idea of storage and programming was called _______.

a. the Madeline

b. EDVAC

c. the Babbage machine

d. the Jacquard loom

d. the Jacquard loom

15. _______ separated the programming task from computer operation tasks.

a. Algorithms

b. Data processors

c. High-level programming languages

d. Operating systems

c. High-level programming languages

In a set of 64 symbols, each symbol requires a bit pattern length of

________ bits

6

how many symbols can be represented by a bit pattern with ten bits?

1024

If the ASCII code for E is 1000101, then the ASCII code for e is

________ . Answer the question without consulting the ASCII table

1100101

A 32-bit code called ________ represents symbols in all languages.

Unicode

An image can be represented in a computer using the ________ method.

either bitmap or vector graphic

In the ________ graphic method of representing an image in a computer,

each pixel is assigned a bit patterns

graphic

in the ________ graphic method of representing an image in a computer,

the image is decomposed into a combination of geometrical figure

vector

in the ________ graphic method of representing an image in a computer,

re-scaling of the image creates a ragged or grainy image.

bitmap

When we want to store music in a computer, the audio signal must be

________ .

sampled, quantized, and coded

A floating-point value after normalization is (1.0101) ? 2?4. What is the

value of exponent section in the Excess-127 representation?

123

Assume a new Excess system uses 17 bits to represent the exponent

section. What is the bias value in this system?

65535

Which number representation method is often used to store the

exponential value of a fractional part?

excess

In an Excess conversion, we ________ the number to be converted.

add the bias number to

When a fractional part is normalized, the computer stores the ________

the sign, exponent, and mantissa

The combination of sign and mantissa of a real number in IEEE

standard floating point format is stored as an integer in the ________ representation.

sign-and-magnitude

________ is an arithmetic operation.

Subtraction

________ is a logical bit operator.

exclusive OR, unary NOT, or binary AND

The ________ method of integer representation is the most common

method for storing integers in computer memory.

two's complement

n two's complement addition, if there is a final carry after the left most

column addition, ________ .

discard it

For an 8-bit allocation, the smallest decimal number that can be

represented in two's complement form is ________

-128

For an 8-bit allocation, the largest decimal number that can be

represented in two's complement form is ________

127

In two's complement representation with a 4-bit allocation, we get________ when we add 5 to 5, 1 to 7

-6;8

If the exponent in Excess_127 is binary 10000101, the exponent indecimal is

6

If we are adding two numbers, one of which has an exponent value of 7

and the other an exponent value of 9, we need to shift the decimal point of the

smaller number ________ .

two places to the left

________ operator (s) takes two inputs to produce one output.

AND, OR, or XO

the unary ________ operator inverts its single input.

NOT

________ operator (s), if the input is two 0s, the output is 0.

In AND, OR, or XOR

________ operator (s), if the input is two 1s, the output is 0.

In only

XOR

For the binary AND operation, only an input of ________ gives an

output of 1.

two 1s

For the binary OR operation, only an input of ________ gives an output of 0.

two 0s

To flip all the bits of a bit pattern, make a mask of all 1s and then

________ the bit pattern and the mask.

XOR

To un-set (force to 0) all the bits of a bit pattern, make a mask of all 0s

and then ________ the bit pattern and the mask.

AND

To set (force to 1) all the bits of a bit pattern, make a mask of all 1s and then

________ the bit pattern and the mask.

OR

The ________ is a computer subsystem that performs operations ondata.

CPU

________ is a stand-alone storage location that holds data temporarily.

A register

________ is a unit that can add two inputs.

An ALU

A register in a CPU can hold ________ .

data, instruction, or program counter values

A control unit with five wires can define up ( maximum) to ________ operations.

32

A word can be ________ bits.

8, or 16, or 32

If the memory address space is 16 MB and the word size is 8 bits, then________ bits are needed to access each word.

24

The data in ________ is erased if the computer is powered down.

RAM

________ is a memory type with capacitors that need to be refreshed periodically.

DRAM

________ is a memory type with traditional flip-flop gates to hold data.

SRAM

There are ________ bytes in 16 Terabytes.

2^16

________ can be programmed and erased using electronic impulses but can remain in a computer during erasure.

EEPROM

________ is a type of memory in which the user, not the manufacturer,stores programs that cannot be overwritten.

PROM

Main memory in a computer usually consists of large amounts of________ speed memory.

low

A ________ is a storage device to which the user can write information only once.

CD-R

A ________ is a storage device that can undergo multiple writes and erasures.

CD-RW

The smallest storage area on a magnetic disk that can be accessed at one time is a ________ .

sector

If the memory has 232 words, the address bus needs to have ________wires.

32

A control bus with eight wires can define ________ operations.

256

A ________ controller is a high-speed serial interface that transfers data in packets

USB and FireWire

The three steps in the running of a program on a computer areperformed in the specific order ________ .

fetch, decode and execute

In the ________ method for synchronizing the operation of the CPU with an I/O device, the CPU is idle until the I/O operation is finished.

programmed I/O

In the ________ method for synchronizing the operation of the CPU with an I/O device, a large block of data can be passed from an I/O device to memory directly.

DMA