Psion Revo Palmtop Computer Instructions Manual

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Time
Adding a country
To add a country which is not included in the Map
view:
1.Select the Add country command from the Edit
menu.
2.Type the country’s name; its national dialling
code; its national dialling prefix, i.e. the digit(s)
that needs to be dialled immediately prior to
each city area code when telephoning from one
city to another within the country; and its
international dialling prefix.
3.Each country must have a capital city, and a
dialog is displayed to create one. See the
previous section on ‘Adding a town or city’.
4.Position the cross hairs on the capital city’s
location, using the pen or arrow keys.
To change any of the country or capital city details,
use the commands on the Edit menu.Note: You can only delete a country that you have
added to the map yourself. To delete a country,
select it and use Delete country from the Edit menu.
Customising Time
To change the city clocks from ‘analog’ to ‘digital’, or
vice-versa, tap the clock that is displayed next to
either the Home or selected city. You can also
change the Toolbar from clock to date by tapping it.
The distance from the Home city to the selected city
is given in the selected units (Kilometres, Miles or
Nautical miles). To change these units, use the
Distance units commands on the View menu, or tap
on the distance figure (underneath the map).
Select the Formats command from the Tools menu
to change:
·The clock format, e.g. from 12 to 24 hours.
·The time separator (usually ‘:’ as in ‘6:19 pm’).
·The date format (e.g. ‘Day Month Year’ or
‘Month Day Year’).
·The date separator (e.g. ‘/’ as in ‘01/03/97’).
You can set preferences either for a standard alarm
time, if you tend to set alarms for the same time of
day, or for a particular alarm sound to appear when
you set a new alarm.
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Time
Setting summer time
If you are not interested in making use of world
times, and are happy to use the Time & date
command to change the time when clocks go
forward or back, you can ignore this section.
However, if you travel or wish to be precise about
world times, you should set your own time to ‘winter
time’ (in the UK, this is GMT), and modify the
‘summer time’ setting when the clocks go forward or
back.
You can also take into account the ‘summer times’
used in the different areas of the world. Most of the
cities on the world map can be included in one of 3
basic areas, or “Summer time zones”: ‘Europe’,
‘Southern’ and ‘Northern’. The approximate ‘summer
times’ for these zones are:
Europe End of March to end of October.
Northern Early April to end of October.
Southern Late October to end of February.
Each city on the map is associated with one of these
zones, or with ‘None’. To check what the Summer
time zone is for a city, select the city in the Map view,
and then select Change city details from the Edit
menu.When the clocks are due to go forward or back in
the cities in a particular Summer time zone:
1.Select the Summer times command from the
Tools menu.
2.Tick the time zone if it is changing to summer
time; remove the tick if it is changing back to
winter time. If your Home city is in that zone,
then Home is ticked automatically and your
Revo’s clock is adjusted accordingly.
The clocks, and sunrise and sunset times, for each of
the cities associated with the ‘Summer time zone’ are
changed.
Note: If the Home city has a ‘Summer time zone’ of
‘None’ because it is not in one of these 3 zones, but
its clocks are due to change, you can change your
Revo’s clock to ‘summer time’ by ticking Home.
When you travel
Whenever you travel, change your Home city to the
town or city you are in. If the city details and ‘summer
time’ setting are correct for the city you are in, the
information in the Map view will be accurate.
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Calc
Calc
·The Scientific view is a scientific calculator with
26 memories. Use this for more advanced
calculations, including those that involve
trigonometry or logarithms.
When you first use Calc, it displays the Desk
calculator. To move between the views, tap the Desk
or Sci buttons on the Toolbar, or use the Switch
view command from the View menu.
Till roll
Desk view
Calc is the calculator program. It has two views: Desk
and Scientific. The two calculator views are separate,
so you can carry out different calculations in each
view at the same time without them affecting each
other.
·The Desk view is a desktop calculator which
produces a “till roll” output. Use this calculator
for simpler calculations, and those involving
percentages.
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Calc
Note: You may find the display suits your style of
working better when it is “flipped”, i.e. when the left
and right sides of the screen are swapped over. To
do this, tap Flip layout on the Toolbar, or use the
command on the View menu.
The Desk calculator
To perform a calculation in the Desk calculator view:
1.Enter your calculation by tapping the number and
operator buttons (+, -, × and ÷) on screen, or
using the keyboard equivalents. There is no
“operator precedence” in the Desk view, so all
calculations are performed in the order you
typed them in, e.g. 10+5×3=45, not 25.
2.To display the result, tap = or press Enter.
·To change the sign of a number, tap +/- or press
the M key.
·To display a list of shortcut keypresses, select
Shortcuts for functions on the Tools menu.
·To clear the calculation line without ending the
current calculation, tap C.
·To clear the calculation line and end the current
calculation, tap AC or press Esc.The till roll keeps a record of your calculations so that
you can refer back to work you did earlier. To move
around the till roll, use the scrollbar or the arrow
keys. Use the command on the Tools menu to clear
the till roll.
Using the memory
You can use the memory to store a value that you
want to re-use, or to act as a “running total”. The
Memory commands are on the Tools menu.
·To store a number in the memory: tap Min or
select the Save in command while the number
you want to store is in the calculation line. An ‘M’
will appear in the calculator display while there is
a value stored in the memory.
·To retrieve a number: tap MR or select the
Recall command.
·To add the current number to the number in the
memory: tap M+ or select the Add to command.
·To subtract the current number from the
number in the memory: tap M- or select the
Subtract from command.
·To clear the memory: tap Min while 0 is
displayed in the calculation line, or select the
Clear command.
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Calc
Percentage calculations
To perform percentage calculations, use % on the
Desk calculator.
·To calculate 40% of 60: enter 60×40, then tap %.
·To increase 60 by 40%: enter 60+40, then tap %.
·To decrease 60 by 40%: enter 60-40, then tap %.
·To calculate what % 60 is of 200: enter 60÷200,
then tap %.
·To find the number that 60 is 40% of: enter
60÷40, then tap %.
You can use a combination of the memory and the
percentage facility, e.g. for tax calculations. If you have
the rate of taxation stored in the memory, you can
quickly add or deduct the tax from any number:
·To add the tax to a number: enter the number,
tap +, tap MR and then %.
·To deduct the tax from a number: enter the
number, tap -, tap MR and then %.
The Scientific calculator
To perform a calculation in the Scientific calculator
view:
1.Use the number, operator and function buttons
to enter your calculation. Enter scientific
functions in the order you would write them
down. For example, tap log BEFORE entering the
number you want to find the log of, but tap x
2
AFTER entering the number you want to square.
2.To display the result, tap = or press Enter.
·To display a list of shortcut keypresses: select
Shortcuts for functions on the Tools menu.
·To clear the calculator display: tap AC or press
Esc.
·To remove the item immediately to the left of
the cursor: press Del.
Note: You can position the cursor anywhere on the
calculation line using the pen or the arrow keys.
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Calc
Operator precedence
The order in which individual elements of a
calculation are performed is called “operator
precedence”. In the Scientific view, the operator
precedence is as follows (highest first):
·Information in brackets.
·Functions which follow the value to which they
refer, e.g. x!
·Powers.
·Implicit multiplication before a memory value, i.e.
30A.·Prefix functions which precede the value they
refer to, e.g. sin.
·Implicit multiplication before prefix function, such
as 5sin30, or before an open bracket, as in
4(4+5).
·Multiplication and division equal, calculated left to
right.
·Addition and subtraction equal, calculated left to
right (lowest).
See the Revo help for more about entering
expressions and operator precedence in the Scientific
calculator.
Scientific
or ‘Sci’ view
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Calc
Re-using answers and calculations
In the Scientific view you can re-use the answer from
your last calculation.
·To insert the last answer at any point in a
calculation: tap the Ans button at the appropriate
point. The calculator will insert ‘Ans’ in the
calculation line, representing the last result.
·To start a new expression with the last answer:
just enter the rest of the expression as though
the answer was already written at the start. The
calculator will prefix the expression with ‘Ans’.
You can also re-use and edit calculations you have
performed earlier. This can save time if you want to
perform a new calculation which differs only slightly
from a previous one.
·To re-use a previous expression: use the up and
down keys, or the Edit previous and Edit next
commands on the Edit menu, to display the last
10 calculations one by one on the calculation
line. When you find the expression you want to
re-use, change it if required and proceed as
normal.
Note: The value of Ans used in a calculation will
always be the value of the last calculation. If you re-
use a calculation based on a value of Ans, the result
will be calculated using the current value of Ans
rather than the value at the time of the original
calculation.
Using the memories
The Scientific calculator has 26 memories, labelled A
through to Z. You can assign a value to each of these
memories, and then incorporate the names into
expressions.
To assign a value to a memory:
1.Enter the number to be stored. If the calculation
line is displaying an unsolved expression, the
stored value will be the RESULT of the
expression.
2.Tap –>, or select Assign to from the Memories
commands on the Tools menu.
3.Type the letter of the memory as a capital letter
(hold down Shift when pressing the memory
letter).Note: You can also assign a value to a memory by
tapping the Mem button, highlighting the memory to
use and then tapping the Assign to button in the
dialog.
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Calc
·To display the contents of the memories: tap the
Mem button, or select Show all from the
Memories commands on the Tools menu.
·To use a stored number in a calculation: type the
capital letter corresponding to the memory, or
tap the Mem button and select the memory you
want.Note: You can assign values to the memories in any
order you like, so use the names as a reminder of the
information they contain. For example, use the ‘T’
memory for a rate of taxation, or ‘Y’ for the rate of
exchange into yen.
Powers, roots & reciprocals
You can calculate squares, cubes and powers using
the buttons in the Scientific view.
·To calculate the square of a number: enter the
number, tap x
2, then tap =.
·To calculate the cube of a number: enter the
number, tap x3, then tap =.
·To calculate a number to a given power: enter
the number you want to raise to a given power.
Tap x^y, enter the power, then tap =.
·To calculate the square root of a number: tap 
Ö ÖÖ Ö
Ö,
enter the number, then tap =.
Memory contents
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Calc
·To calculate the cube root of a number: tap 
3Ö ÖÖ Ö
Ö,
enter the number, then tap =.
·To find the x root of a number: enter the
number of the root you want to find, e.g. 4 for
the fourth root. Tap 
xÖ ÖÖ Ö
Ö, enter the number you
want to find the x root of, then tap =.
·To calculate the reciprocal (1/x) of a number:
enter the number, tap x-1, then tap =.
Trigonometric functions
·To calculate the sine, cosine or tangent of a
number: tap sin, cos or tan; enter the number
and tap =.
·To calculate the inverse sine, cosine or tangent
of a number: tap inv once; then tap sin, cos or
tan; enter the number and tap =.
·To calculate the hyperbolic sine, cosine or
tangent of a number: tap hyp once; then tap sin,
cos or tan; enter the number and tap =.
·To calculate the inverse hyperbolic sine, cosine
or tangent of a number: tap hyp and inv once
each to depress them; then tap sin, cos or tan;
enter the number and tap =.
Angle formats
The scientific calculator can express angles in degrees,
radians and gradients (360 degrees = 2p radians =
400 gradients). The angle units you use will affect the
outcome of trigonometric calculations.
To change the angle format:
·Select the Formats command from the Tools
menu, then select the Angle format you require.
·Tap on the angle format abbreviation in the
calculation line, e.g. DEG. If the result of a
trigonometric calculation is displayed when you
do this, the result will automatically be re-
evaluated.
Factorials
A factorial is the result of multiplying all the numbers
from a given starting number down to one, e.g. the
factorial of 4 (written as 4!) is 4×3×2×1=24.Note: You can use factorials to find permutations, i.e.
the number of ways things can be arranged. For
example, if you want to find possible anagrams of a
word with four letters, 4! shows that there are 24
ways these letters can be arranged.
·To find the factorial of a number: enter the
number of which you want to find the factorial,
tap x!, then tap =.
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