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Scientific Calculators with Memory Systems

Both (1] and [2] Feature:

• Bright green-on-black fluorescent displays

• Scientific notation • Trigonometric and inverse trigonometric

functions in degrees or radians

•Base e, base 10 logarithm/exponential

•Percentage key

• Solve square, square root, and reciprocals • Pi key

• Mixed and chain calculation ability

• Floating decimal system

• Change-sign key

•Algebraic logic •Clear/clear entry keys

• Warranted by manufacturer-see page 336

1

ADVANCED SCIENTIFIC CALCULATOR. t0 digit display with 8-digit mantissa.2-

digit exponents 1n scientific notation. Degree/radium functions. Obtains mean

variance, standard deviation and correlation. 3-key memory system (plus, clear, re–

call). Parentheses key. Uses 4 disposable "AA"-cell batteries (included) or 110- t20

volts. AC-order AC adapter below. Molded plastic/aluminum body. Actual weight

0.50 lb.

X 641-8024 A-Mailing weight 0.70 lb...

. ...................................27.50

X 641-8032 A-AC Adapter for [ 1) UL listed. Mailing weight 0.50 lb.......... 3.95

2

SCIENTIFIC CALCULATOR. 8 d1g1t display with 6-digit mantissa. 2-digit expo-

nent in sc1enhfic notation. 2-key memory system (plus. recall) . Display-memory

exchange key. Uses 2 disposable " AA"-cell batteries (included) or 110-120 volts.

AC-order AC adapter below. Molded plastic/brushed aluminum body. Actual

weight 040 lb.

X 64 1-8008 A-Mailing weight 1 lb ... ............ ...

............. 16.50

X 641-80 t6 A-AC adapter for [2] UL listed Mail. wt. 0.50 lb. .

3 .95

The "Little Professor"

from Texas Instruments

SAVE

NOW

1495

5

5

ONLY

This special pnce ends

Dec.

24

After Oec. 24, order at Reg. Pnce

• Display over 16,000

pre-programmed problems to

test a child's basic knowledge

of addition, subtraction.

multiplication, and division

• 4 degrees of difficulty

• Built-in battery saver

• Warranted by manufacturer–

see page 336

EASY TO OPERATE. First select the degree of problem difficulty by setting switch

on side of machine. Next select arithmetic function by pressing approp1rate key

Press " Set" and "Go·· keys and first problem 1s displayed. Child has 3 chances to

give correct answer. If incorrect answer 1s given, " EEE" lights up. After correct

answer (or pressing " Go" key) next problem is displayed. At end of sequence,

number of correct answers is displayed. Uses disposable 9-volt battery (not incl.).

3x5 in. plastic body. Ages 5 to 9. Reduced from our big Spring 77 Cat.

X641-6176A-Act. wt. 1.20 lbs. Mail. wt. 1.70 lbs .Reg. $19.95; NOW 14.95

8-digit

L.C.D.

Calculator

and

Billfold Set

a great gift value

SAVE

NOW

1999

$1Q

ONLY

This specia

price ends

Dec. 24.

After Dec. 24,

order at Reg. Price.

• Easy-to-read Liquid Crystal Display helps

provide a longer battery life

• 4-key fully-addressable memory system (plus. minus,

clear, recall) stores number for future use

• Full floating decimal system • Percentage key

• Sign-change key

• Square root key

• Black vinyl billfold has section for holding calculator

and a section for credit cards, photos, etc.

•Uses 3 disposable "AA"-cell batteries (included)

MIXED AND CHAIN CALCULATION ABILITY-add.subtract, multiply or d1v1de

individually or 1n combination. Brushed base-metal case. Actual weight 0.25

lbs. Warranted by manufacturer-see page 336. Reduced from our big Fall '77

Catalog-see page 757.

X 641-7323 A-Mailing wieght 0.50 lb.. ............Reg. $29.99; NOW 19.99

Instant Replay Calculator

from Texas Instruments

ONLY

2995

• A touch of a key and previous

entries (up to 20) are re-displayed.

You can make corrections, press a

second key and resume calculation

no entries are lost!

• 8-digit green-on-black

fluorescent display

• 2-key memory system

(store, recall)

stores numbers for future use

SAVES TIME. HELPS REDUCE ERRORS Ideal for shopping, figuring taxes, budgets.

etc.Mixed and chain calculation ability-add.subtract. multiply,or divide ind1v1dually or

in comb1nat1on. Floa11ng decimal system. Percentage key. Sign-change key. Rugged

plastic body. Actual weight 0.25 lb. Uses 1 rechargeable nickel cadmium battery (in–

cluded) or 110-volt AC-UL listed recharger

I

AC adapter included. Warranted by man–

ufacturer-see page 336.

X 641-8040 A-Mailing weight 1 lb ...

...............................29.95

Buy now with our Time Payment Plan-see page 341

JCPenney

275