Unit #15 Objectives: The Keyboard: Part 2

The objective of unit The Keyboard: Part 2 is to learn to recognize and understand the 16 key unit vocabulary terms. This is accomplished by completing the readings and other activities.

Unit Vocabulary

Below is a list of key vocabulary terms in this unit. You can also Print out the vocabulary list.

a key which is used in many languages to mean 'and'

In SQL queries, it is best practice to spell out 'AND' and must not use the ampersand (&) key as a shortcut.

the character which often means "multiply" in a math equation or "match all" in a RegEx wildcard

The programmer could not remember whether to use an asterisk (*) or percent sign (%) as a wildcard in his SQL regular expression.

the sign often used in email addresses to separate usernames from domain names

The at key is often in very different locations on many international keyboards

a key used for separating files and folders, normally in a Windows file system.

The users files were located in 'C:\documents and settings\gregbrady\my documents'

the punctuation marks '{' and '}' used in pairs to set apart or interject text within other text

In programming languages, brackets are often used to denote executable code in a FOR/NEXT loop.

in typography, this is the distinction between capital (big) and lower (small) letters

In order to change case on a computer, the user typically presses the "Shift" key

a key used to separate folders and files, often used in Unix file systems

the user's php binary was located in /usr/local/php

the sign which means that the value on the right is less than the value on the left

5 > 3

the sign which means that the value on the left is smaller than the value on the right

3 < 5

The operator sign often indicating the process of subtraction or difference

The program did not output the expected result because the programmer forgot a minus sign.

the punctuation marks '(' and ')'used in pairs to group values or sets of values.

Parentheses are often used to show which mathematical values are calculated first in an equation.

the sign meant to show a common measurement based on a fraction of 100

The CEO reported that sales we up 75% over last quarter.

the operator sign normally indicating the operation of addition

The elementary school teacher told the students that 2 plus 2 equals 4.

the punctuation marks '[' and ']' used in pairs to set apart or interject text within other text

In programming languages, the use of square brackets are sometimes used to show elements of arrays.

this key normally means "approximately" in mathematics; in Unix systems this character is used to represent a home directory

The student learned that his home directory was 'home/~johndoe' ans his web directory was at 'http://www.university.co.uk/~johndoe'

a character often used in file names to join words without using a space; originally used on typewriters to make underlined text

The long file name "hippy_dippy_string_concatenation.pl" contained many underscores because spaces aren't advised in Unix file names.