The Rice Thresher (Houston, Tex.), Vol. 63, No. 1, Ed. 1 Thursday, June 26, 1975 Page: 9 of 12
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For Those At Rice
HP70 Pocket Calculator, Financial $275.00
4Register Operational Stack
Reverse Polish Notation
RollDown Operational Stack Review
YJ
XY Register Interchange
Memory (1Register for Constants or
Data, Sets to 12 When Turned On)
Memory (1Register for Accumulation)
Memory (5Register Random
Entry for Financial Keys)
Percent
Percent Change
Number of Periods
(Enter or Find)
Interest Rate Per Period
Future Interest (Enter or Find)
Interest (Find Accrued Interest
for Simple Interest Problems)
Day/Date Calendar from 1900 to 2099
Summation
Sum of the Squares
Mean
Standard Deviation
SumOfTheYears' Digits
(Depreciation or Interest Rebates
Using Rule of 78's)
Trend Line (Straight Line/Linear
Regression Forecasting)
Floating or Fixed Decimal
Scientific Notation LED
(10Digit Mantissa, 2Digit Exponent)
Tactile Feedback Keyboard
Rechargeable Battery or AC Power
swr
(3
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jo
j( ^ H

n
13
D
1 Q 1
D
ij
HP80 Pocket Calculator, Advanced Financial
4Register Operational Stack $395.00
Reverse Polish Notation
RollDown Operational Stack Review
Square Root
Yx
X  Y Register Interchange
Memory (1Register)
Memory (5Register for Financial
Keys with Left to Right Entry)
Percent
Percent Change
Number of Periods (Enter or Find)
Interest Rate per Period
(Enter or Find)
Payment per Period
(Enter or Find)
Present Value (Enter or Find)
(Enter or Find)
Payment per Period
(Enter or Find)
Present Value (Enter or Find)
Future Value (Enter or Find)
Interest (Find Accrued Interest for
Simple Interest Problems)
Floating or Fixed Decimal
Scientific or Fixed Notation LED
(10Digit Mantissa, 2Digit Exponent)
Tactile Feedback Keyboard
Rechargeable Battery or AC Power
HP45 Pocket Calculator, Advanced Scientific
4Register Operational Stack $325.00
Reverse Polish Notation
RollDown Operational Stack Review
Square, Square Root
Reciprocal
Pi
Log, Natural Log
Arc, Sin, Cos, Tan
ex, 10x, Yx
X  Y Register Interchange
Memory (9Registers)
Memory Arithmetic
Last X Memory Register
Percent, Percent Change
Summation
Sum of the Squares
Mean
Standard Deviation
Factorial
Polar to Rectangular to
Polar Coordinate Conversion
Vector Arithmetic
Decimal to Degree, Minute,
Second to Decimal Degree Conversion
US to Metric Conversion for
length, weight, volume
Radians, Grads or Degrees
Floating or Fixed Decimal
Scientific or Fixed Notation LED
(10Digit Mantissa, 2Digit Exponent)
Tactile Feedback Keyboard
Rechargeable Battery or AC Power
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•QOpOQ
QOOQl
mm mm mm
■
HP21 Pocket Calculator
$125.00
4Register Operational Stack
Reverse Polish Notation
RollDown Operational Stack Review
Square Root
Reciprocal
Pi
Log, Natural Log
Arc, Sin, Cos, Tan
ex Yx
XY Register Interchange
Degree or Radian Mode
Polar to Rectangular to Polar
Coordinate Conversion
Select Display Format (Scientific or
or Fixed Notation and RoundOff)
Memory (1Register)
Full Memory Arithmetic
Scientific (8Digit Mantissa, '2Digit
Exponent) or Fixed (10Digit)
Notation LED
Tactile Feedback Keyboard
Rechargeable Battery or AC Power
HP65 Pocket Calculator^ Multipurpose Programmable . Magnetic Cards
4Register Operational Stack
Reverse Polish Notation
RollDown Operational Stack Review
RollUp Operational Stack Review
Square, Square Root
Reciprocal
Pi
Log, Natural Log
ex, 10x, Yx
XY Register Interchange
Memory (9Registers)
Memory Arithmetic
Last X Memory Register
Factorial
Polar to Rectangular to
Polar Coordinate Conversion
Decimal to Degree, Minute,
Second to Decimal Degree
Conversion
Degrees (Hours)/Minutes/Seconds Arithmetic
Radians, Grads or Degrees
Decimal to Octal to Decimal Conversion
Integer/Fraction Truncation
Program Memory to 100 Steps
Program Insert/Delete Editing
Five User Definable Keys
Subroutine Labeling up to 15 Labels
GO TO Label Search (09, AE)
Two Flags for Skip or NoSkip
Programming or Branching
Relational Tests for Skip or
NoSkip Programming or
Branching for:
X = Y
X does not = Y
X less than or = Y
X greater than Y
Decrement Register and Skip On
Zero Programming or Branching
Single Step Program Running
or"Inspection
.Magnetic Card Reader/Writer
Floating or Fixed Decimal
Scientific or Fixed Notation LED
(10Digit Mantissa, 2Digit Exponent)
Tactile Feedback Keyboard
Standard Pack of 18 PreRecorded
Programs, 20 Blank Cards,
2 Diagnostic Cards
Rechargeable Battery or AC Power
$795.00
IBi
cm tsu&t
zj □ oqyl
□ □QOO!
QC
HP55 Pocket Calculator, Programmable $395.00
4Register Operational Stack
Reverse Polish Notation
RollDown Operational Stack Review
Square, Square Root
Reciprocal
Pi
Percent
Log, Natural Log
ex, Yx, 10x
XY Register Interchange
Memory (20 Registers)
Memory Arithmetic into 10 Registers
Last X Memory Register
Conversion Functions (Both Directions):
Polar to Rectangular Coordinates
Decimal Angles to Degrees, Minutes, Seconds
Decimal Time to Hours, Minutes, Seconds
Degrees to Radians
BTU to J
Lbm to Kg
Inches to mm
Feet to Meters
Gal to Liter
Farenheit to Centigrade
Add or Subtract Degree Angles or Time
Mean, Standard Deviation (1 or 2 Variable)
Linear Regression (2 Variable)
Linear Estimate
X! (X Factorial)
Digital Timer, 0100 Hours Range
Time "Splits" Storable in 10 Memories
Program Memory 49 Steps
X = Y, X f Y Relational Tests
Conditional and Direct Program Branching
Single Step Program Running or Inspection
Select Display Format (Scientific or Fixed
Notation and RoundOff)
Scientific (10Digit Mantissa, 2Digit Exponent)
or Fixed Notation LED
Tactile Feedback Keyboard
Rechargeable Battery or AC Power
RICE CflmPUS STORE
the rice thresher, thursday, june 26, 1975 — page 9
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Brewton, Gary. The Rice Thresher (Houston, Tex.), Vol. 63, No. 1, Ed. 1 Thursday, June 26, 1975, newspaper, June 26, 1975; Houston, Texas. (https://texashistory.unt.edu/ark:/67531/metapth245241/m1/9/: accessed July 21, 2019), University of North Texas Libraries, The Portal to Texas History, https://texashistory.unt.edu; crediting Rice University Woodson Research Center.