REPLACING THE BATTERY
If the calculator slows down when using the battery, the
battery is weak and should be replaced.
1. Remove the 6 screws on the bottom panel and
remove the panel.
2. Remove the old batteries.
3. Insert the new batteries
(Radio Shack type RS-389 Cat. No. 23-101)
following the polarity of the old battery.
4. Replace the bottom panel and replace the screws.
Replacement Batteries
Radio
Shack
Eveready
Maxell
389A
189
LR1130
25
Mode Press
Display
DEG
0 [INV][x<–>m]
0
6 [
∏
]
6
15 [=]
0.4
[INV] [sin
– 1
]
23.57817848
[Min]
M 23.57817848
90 [–] [MR] [=] M 66.42182152
0 [INV][x<–>m]23.57817848
23.58 [cos]
0.916502421
[
¥
] 15 [=]
13.74753633
ELECTRONICS
AMPLIFIER GAIN
Vi = 1mV
V0 = 3V
Calculate the value of Av
Voltage gain Av = 20 log Vo/Vi
= 20 log 3
1
¥
10–3
= 69.54242509 dB
Press
Display
3 [
∏
] [EXP] 3 [+/–]
1. –03
[=] [log] [
¥
]
3.477121255
20 [=]
69.54242509
24
