CS Chapter 7

How many digits are there in a hexadecimal system?

16

K bits in a sequence yield have many symbols?

2^k

How many bits are needed to represent each of the hexadecimal digits?

4

The Hawaiian alphabet has 18 symbols. How many bits are needed to represent just these symbols?

5

Using odd parity, a normal byte, for example, 1010 0011 would: A) include a ninth bit set to 1 B) include a ninth bit set to 0 C) not make use of a ninth bit D) use a ninth bit to determine exactly which bit was changed if an error occurred

A (include a ninth bit set to 1)

What does ASCII stand for?

American Standard Code for Information Interchange

The familiar UPC bar code uses more than the minimum number of bits to code symbols: A) so the code will fill up the required amount of space on the package B) so the reader can tell whether or not the product is upside down C) so additional information can be coded D) to allow for expansion in the future

B (so the reader can tell whether or not the product is upside down)

The NATO broadcast alphabet: A) encodes all digits using unusual names B) is very efficient minimizing the amount of memory needed to store each C) encodes letters as words D) makes it difficult to distinguish between different letters

C (encodes letters as words)

This places information in order perhaps by using non-digit symbols

Collating Sequence

Extended ASCII code: A) was developed in the United States B) was adopted by IBM as the standard for character representation C) is now known as ISO-8859-1 D) all of the above

D (all of the above)

A bit is larger than a byte

False

A red, yellow, and green traffic light is a good example of a binary system

False

Place value representation is associated with decimal numbers (base 10), but it does not apply to the binary numbers

False

The first person to apply the term digital to computers was ______, a Bell Labs mathematician.

George Stibitz

______, a German mathematician, independent of Newton, invented calculus.

Gottfried von Leibniz

______ is the name of the Standard US keyboard.

QWERTY

A byte is the standard unit for computer memory

True

A key property of the PandA representation is that it is discrete; that is, the phenomenon is either present or it is not; the logic is either true or false

True

Extended ASCII is a 8-bit code

True

The tag characters included with the content characters of the Oxford English Dictionary increase the size of the file compared with plain text

True

Although ASCII and its variations are widely used, the more complete solution is a representation called _______, which uses more than one byte (up to four) to encode about 100,000 symbols.

Unicode

UTF of UTF-8 stands for ______.

Unicode Transformation Format

_________ are used to encode information about a product and use bars to represent 1s and empty spaces to represent 0s. The encoding represents the manufacturer and the product.

Universal Product Codes (or UPC)

Unlike digital information, _____ information is continuous

analog

______ is short for binary digit.

bit

An 8-bit sequence on the computer is called a(n)_______

byte

UPC uses the ______ (reversing representation of the 1s and 0s) to represent the manufacturer and the product.

complement

Information describing other information is called ______.

metadata

Four bits is called a(n)_______.

nibble

If you attempt to represent a number that does not fit in the space you've been given (i.e. one byte) then you have what is called ______ .

overflow

An extra bit added to a byte in memory used to detect transmission errors is called the _____ bit.

parity

The number of digits is the ________ of the numbering system.

radix (or base)

When you can't represent a number accurately, like a repeating fraction, ______ occurs.

truncation (or round-off erro)