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This unit is designed to function either as a 10-digit Calculator
or
a
BLACKJACK
game. Select the mode you want with the
GAME CO
P CALCulator switch. In the GAME mode, all Blackjack
functions indicated above operation keys will be active.
PREPARING FOR OPERATION|
Your Radio Shack BLACKJACK 21 can operate either from internal
batteries, or from AC power using an optional AC Adapter (not
supplied). Three type "AAA" penlight cells are required for battery
operation. Press and slide off .the battery compartment cover
(back of calculator). Snap batteries into the battery holder-TAKE
CARE TO OBSERVE CORRECT BATTERY POLARITY.
Press the
cover back in place.
We recommend that you use Radio Shack's 23-584 or 23-554.
Battery replacement will be required when the display gets dim.
For AC operation, merely plug the AC Adapter (use ONLY Radio
Shack's 65-735) into the jack located in the front of the unit
and the other end into a source of 120 volts, 60Hz AC power.
NOTE: If you are not going to use the Calculator for more than
a month, remove the batteries. Weak or dead batteries can
leak damaging chemicals~thus.it is always best to remove
batteries when not in use over a period of time.
CALCULATOR OPERATION]
Set mode switch to CALC. The full capacity in calculator mode
is
10 digits.
If a calculation result exceeds 10 digits or you
divide by zero, an "E" will be shown at the left side of the
display. Follow the samples below.
NOTE: Always press
["c]
before performing any calculations.
BASIC CALCULATIONS
12.3+753=
[c] 12.3 0 753 0
765.3
4.56-789=
[C] 4.56 0 789 @
- 784.44
12.3X4.56=
[C] 12.3 0 4.56 g
56.088
96.3+8.52=
[C] 96.3 0] 8.52 0
11.3028169
(12+3—6)x89+7=
GO 12 0 3 0 6 0 89 0 7 0
114.4285714
NOTE: In the last example, brackets do not need to be used (you
can if you want to-the result will be the same).
CONSTANT CALCULATION
4+8=
04080
12.
7+8=
70
15.
NOTE: The
second
number becomes the constant.
2
3
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