topics 1 &2

Pataasin ang iyong marka sa homework at exams ngayon gamit ang Quizwiz!

In base 16, the digit E corresponds to what decimal value?

14

How many digits are there in the hexadecimal number system?

16

In which decade was the first generation of computers developed?

1950s

In which decade did the first operating systems begin to be developed?

1960s

When did Intel introduce the 4004 chip?

1971

Which of the following is a value less than zero, with a sign opposite to its positive counterpart?

negative number

Which of the following terms best describes systems software areas?

...

The power corresponding to the least significant digit in the positional notation in any base is:

0

How many digits are there in the decimal number system?

10

What is the decimal value of the largest digit in the hexadecimal number system?

15

How many digits are there in the binary number system?

2

What is the largest decimal value you can represent with two hexadecimal digits?

255

What is the largest decimal value you can represent with six binary bits?

63

Who designed the Difference Engine?

Babbages

A rational number is any number that can be expressed without a fractional part.

False

A vacuum tube was a device used in the third generation of computers.

False

The abacus was the world's first electronic digital computer.

False

The base of the hexadecimal number system is 15.

False

The digits used in any base are 1 through the base number.

False

The letter C is used to represent the number 11 in hexadecimal.

False

The value of each position in a number system is determined by subtracting the base from the position number.

False

Who invented the punched card?

Jacquard

Who built the first gear-driven mechanical calculator that did addition and subtraction?

Pascal

In which software generation were the high-level programming languages developed?

Second

A byte is made up of eight binary digits.

True

A natural number is the number 0 or any number obtained by adding 1 to a natural number.

True

Ada Augusta, Countess of Lovelace, is credited with being the first programmer.

True

Algorithmic thinking is a necessary skill in Computer Science.

True

An abstraction is a mental model that removes or hides complex details.

True

An algorithm is a set of steps that defines how a task is performed.

True

Applications programmers use the tools built by systems programmers.

True

Assembly-language is first generation software.

True

Computer software is the collection of programs that provide the instructions that a computer carries out.

True

Earliest machine programs were hard wired.

True

Representing a number in base 5 sometimes requires more digits than representing that same number in base 10.

True

Spreadsheets and word processors are known as software applications.

True

Starting from the right, every group of four binary digits can be read as one hexadecimal digit.

True

The Internet is descended from a U.S. government-sponsored network called the ARPANET.

True

The base of a number system determines the number of digits used in the system.

True

The category of numbers called integers includes negative numbers.

True

The fourth generation of computer hardware was characterized by large-scale integration.

True

The personal computer was introduced in the fourth generation of computer hardware.

True

To find the decimal equivalent in a new base you just divide the decimal value by the new base.

True

Two hexadecimal digits can be stored in one byte.

True

What is the lowest base in which the number 10 could be a valid number?

binary

What is a single binary digit called?

bit

What is a group of eight binary digits called?

byte

Which of the following terms best describes circuit boards, keyboards, and disk drives?

computer hardware

What is the lowest base in which the number 987 could be a valid number?

decimal

Computational Science is one of the Systems areas.

false

Which software generation does the Internet belong to?

fifth

In which software generation did the distinction between systems programmers and applications programmers first surface?

first

Which of the following describes a natural number, the negative of a natural number, or zero?

integer

Which of the following language characterizes the first software generation?

machine language

Which of the following is an integer or the quotient of two integers (excluding division by zero)?

rational number

To which hardware generation does core memory belong?

second

In which hardware generation were integrated circuits introduced

third

What device replaced the vacuum tube in second generation computers?

transistor

A number in any base can be expressed using a positional notation.

true

The number 10 represents the base value in every number system.

true


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