Chapter 1: Operating the TI-84 Plus Silver Edition
11
Using the Mode Screen to turn the clock on
1. If the clock is turned off, Press
†
to highlight
TURN
CLOCK ON
.
2. Press
Í Í
.
Using the Catalog to turn the clock on
1. If the clock is turned off, Press
y N
2. Press
†
or
}
to scroll the
CATALOG
until the
selection cursor points to
ClockOn.
3. Press
Í
Í
.
Turning the Clock Off
1. Press
y N
.
2. Press
†
or
}
to scroll the
CATALOG
until the
selection cursor points to
ClockOff
.
3. Press
Í
Í
.
Entering Expressions and Instructions
What Is an Expression?
An expression is a group of numbers, variables, functions and their arguments, or a combination of
these elements. An expression evaluates to a single answer. On the TI-84 Plus, you enter an
expression in the same order as you would write it on paper. For example,
p
R
2
is an expression.
You can use an expression on the home screen to calculate an answer. In most places where a
value is required, you can use an expression to enter a value.
