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, pR
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.
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