393 / 446
[!]
HP-21
15900
EATON'S
BUSINESS
CENTRE
Hewlett-Packard
scientific
pocket calculators
Eaton·s now brings you the most advanced pock–
et-sized calculators in the world . Hewlett-Packard
1s a leading designer and manufacturer of
special-purpose electronic equipment. from
cesium beam clocks to complete computer
systems. Their pocket calculators have become
the standard of excellence in the electronics
industry. These calculators are also available 1n
most Eaton·s stores across Canada .
A
HP-21 sc1ent1f1c hand-held calculator. Offers
display format selectivity-scientific notation
or full-floating selectible decimal with round-off .
12-digit display (8-digit mantissa. 2-digit expo–
nent. decimal. 2 signs) . Has four operational
stacks plus full addressable memory. X-Y register
interchange; stack roll down: trig functions; com–
mon and natural logs and anti-logs. Operates 1n
reverse polish notation . Operates on recharge–
able nickel-cadmium battery pack (included) or
AC power. Measures about
5.
x 2 x 1" . Weighs
about 6 ounces. Complete with adapter/
recharger and protective carrying case.
8-R 3021 - 9 00 mthly' or cash ...
159.00
B
HP-45 advanced scientific hand-held calcu la-
tor. 15-digitdisplay(l O-d1g1tmantissa. 2-digit
exponent. 2-signs and decimal) works in decimal
or scientific notation. Performs all logarithmic and
trigonometric functions . Nine addressable mem–
ory registers store data; retrieve 1t instantly. Four–
register operational stack retains up to four inter–
mediate solutions 1n sequence; automatically
enters them into calculation . Converts polar to
rectangular coordinates and vice versa . Angular
mode may be converted to degrees/minutes /
seconds. .. Last
X"
register for error correction .
Operates on rechargeable nickel-cadmium battery
pack (included) or AC power. Measures about 5
3,1.,
x
3
'A
x
3
I
4" . Weighs about 9 oz. Complete with
adapter
I
recharger; case.
8 -R 3045-11 .00 mthly• or cash ... ... 299 .00
C
HP-55 programmable scientific hand-held
calculator. Programmable up to 49 key–
strokes Single step running or inspection of a
program . Conditional and direct branching . Has·
86 keyboard commands including all logarithmic
and trigonometric functions. and all conversions
for metric units. 15-d1g1t display (10-digit mantis–
sa. 2-digit exponent. 2-signs and decimal) . Four–
reg1ster operational stack: 20 data storage regis–
ters. " Last
x··
register for error correction . Elec–
tronic timer with 100-hour capacity times up to
10 experiments at one time. " Computer logic"
system (reverse polish notation) Operates on
rechargeable nickle-cadmium battery pack
(included) or AC power. Measures about 5% x
3
'Ax 1" .Weighs about 9 ounces. Complete with
adapter
I
recharger: hard carrying case: and soft
sase with belt loop.
8-R 3055-18 .00 mthlyt or cash ... 495.00
•Regular credit terms;
t
specia1 credit
terms with up to 36 months to pay.
See page 2 33 for details
EATON 'S 391