TRS-80 Pocket Computer – PC-3/3A

Radio Shack Product Description

[PC-3]

A computer so small it fits in pocket or purse! Program PC-3 to solve tough problems, or use our ready-to-run software (requires interface and recorder). Use strings of up to seven characters. Features 24-character LCD, two-digit exponents, multiple statements, arrays, edit and trace. Statement compation squeezes memory space. Automatic power-off saves battery life. Comes with batteries and manual.

PC-3/PC-3A Stats

Year:
1983
Introdutory Price:
$99.95
CPU:
SC 61860
ROM:
24K
PC-3 RAM:
1.4K
PC-3A RAM:
4K
Functions:
16 Arithmetic and 8 String Functions
Accuracy:
10-Digit
Video Size:
24 Characters
Graphics:
None
Measurements:
3/8 x 5-5/16 x 2-3/4″
What was it really?:
Sharp PC-1251

Accessories

Item
Cat. No.
Initial Price
Picture
Printer/Cassette Interface
26-3591
$119.95

Get the most from your PC-3 with our new thermal dot printer and cassette interface! Provides hard copy, plus lets you save programs on ordinary cassette tapes (requires recorder). Prints 24 characters per line at one line per second, with wrap-around. Slip PC-3 into the Printer/Cassette Interface and you’re ready to go! Includes U.L. listed AC adapter/charger, paper, cable, and manual.


PC-3 Thermal Paper
26-3592
$2.49

2-1/4″ wide. Package of 5.


Personal Finance
26-3518
$19.95

A real timesaver that helps you manage the financial details of your household. Programs include Budget Management, which provides up to 15 expense categories; Electronic Checkbook, for recording checks and deposits and balancing your checkbook; Interest/Annuities, for compound interest/ annuities calculations. A stock portfolio program tracks the value of your investments, and Metric/ English Converter for easy and exact conversions between the two measurement systems.


Business Finance
26-3517
$19.95

With this package of seven programs, the TRS-80 Pocket Computer becomes a powerful decision-making tool for professionals in the field of finance. The Days and Dates program will calculate the number of days between a reference date and a second date, or will find the resulting date when any number of days are added to, or subtracted from the reference date. The Loans and Annuities program uses four primary variables: amount of loan, payment, number of payments and annual interest rate. Given any three of the variables, it calculates the fourth. A fifth variable, periods/year, permits the user to specify any number of payments per year. Other programs in the package are Future Value, Bond Price and Yield, Internal Rate of Return, Compound Interest and Depreciation.


Business Statistics
26-3516
$19.95

Statistics for Business, Marketing and Sales. Consists of seven programs for analyzing data, and one program containing eight formulas useful in making business decisions. The Forecasting program is useful in making predictions from measurements taken over a specific period of time (months, weeks, years, etc.). The Seasonal Vaiiation program calculates adjusted monthly or quarterly seasonal indices using the ratio-to-centered-moving average method. Moving Average. A data set of up to 60 values can be averaged. The number of data points comprising the moving average can be changed without having to re-enter the original data. Normal/ TIF Distributions. Given a mean, a standard deviation, and a value for X this program returns the corresponding z ‘ score, the value of the normal density function f(X) , the cumulative percentile P(X), and the area under the normal curve between X and the mean. Calculates one-tail or two-tail probabilities for the t distribution, given at value and the degrees of freedom. Package also includes programs for Descriptive Statistics Multiple Regression, and Gompertz Curve An~ysis. The Management Decisions program provides rea~y-to-use formulas for break-even analysis, optimum order quantity, make vs. buy, profit margin, markup, price elasticity, manufacturing cost curve, and random sample.


Statistical Analysis
26-3522
$24.95

An invaluable aid in research and data analysis! Includes six programs- Descriptive Statistics, Correlation and Regression , Analysis of Variance, Chi Square Analysis, Distributions (normal, t, F, x2) , and Multiple Regression. Keyboard templates for each program are included to guide you in running the programs.


Real Estate Analysis
26-3510
$24.95

Especially created for the real estate investor and agent. This package includes: annuities, compound interest, depreciation calculations, cash flow analysis, and residential purchase analysis. Depreciation calculations include straight line, declining balance, and sum of the year’s digits. A “must” for anyone involved in real estate-time saver!


Civil Engineering
26-3511
$24.95

Makes the TRS-80 Pocket Computer a valuable “on-site assistant.” Programs include Simple Beam Computations, Column Buckling and ASIC Column Formulas, Stress in Cylinders and Bolt Torque, Cantilevered Beams, Vector Computations, Fixed Beam Computations, Section Physical Characteristics.


Surveying
26-3512
$29.95

Enables the surveyor to convert field measurements into final property boundaries. Includes leveling, volume, irregular area, closure, more. Modules include TAPE LEVEL, TRAP, CLOSE, CONVERT, DISP.


Aviation
26-3513
$24.95

A complete flight management system which provides the basic equations and conversions used by the pilot. Converts: Temperatures from °C to “F and °F to °C · Distances in statute miles, nautical miles and kilometers; Liquid measures in U.S. gallons, Imperial gallons and liters. Calculates: True Altitude based on pressure altitude, temperature, and reference altitude; True Airspeed based on pressure altitude, temperature and indicated airspeed; Mach Number based on true airspeed and temperature; True Airspeed based on Mach number and temperature; Off-Course Correction and drift angles; True Headings and ground speed with winds; and Enroute winds. Ideal as replacement, backup or double-check of conventional slide-rule flight computers.


Electrical Engineering I
26-3520
$24.95

Includes low and high pass, active and passive filter design, complex impedence calculator, LF transistor amplifier designs, linear equations solutions, tables and calculations for RF coil design, more.


Engineering Math I
26-3525
$14.95

Performs Gaussian matrix reduction, matrix multiplication, and matrix inversion.


Engineering Math II
26-3526
$14.95

Performs all common vector operations in three dimensions, complex number arithmetic, trigonometry and exponential functions.


Engineering Math III
26-3527
$10.95

Solves systems of linear simultaneous equations, performs polynomial math and calculus.


Engineering Math IV
26-3528
$7.95

Solves variety of triangle problems.


Math Drill
26-3514
$14.95

Designed for children in the primary grades. Teaches basic math skills through examples and rep etition. The package provides random problems at four levels of difficulty, a math table display and test, a program that allows the parent or teacher to enter problems. For fun, there’s a Hi/Lo game that allows a child to guess a random number selected by the computer.


Games I
26-3515
$14.95

Fast-paced fun you can enjoy just about anywhere! Includes Cannibals and Missionaiies, NIM for two players, Space Ship Landing, Treasure Hunt, Biorhythm Computer, Star Buster, Quick Watson! and Craps.


Games II
26-3523
$14.95

More fun for the fami ly. Includes Missile, Blackjack, Baccarat, Bandit (Las Vegas Slot Machine game), Aceyducey, Numguess, Pokeslot (Poker Slot Machine Game) and Craps.


Calendars
26-3529
$19.95

Programs to solve date-related problems. Day of week, days between dates, calendar printout, Julian date, more.


Horse Race Analyst
26-3530

Helps predict winner based on past performance.


Banners
26-3531
$9.95

Create big, eye-catching messages and signs. Requires Printer/Cassette Interface.


Golf Scoring
26-3532
$14.95

Helps an amateur monitor play and compute USGA handicap.


TRS-80 Pocket Computer – PC-4

[PC-4]

Radio Shack Product Description (RSC-9)

Our lowest-priced pocket computer ever! The new PC-4 lets you maintain up to ten short programs in memory or combine the prorgamming area to allow longer programs. Each program can be identified with a single-key label and run simply by pressing the specified key. PC-4’s BASIC language includes 23 commands, 15 functions and 10-digit numeric accuracy. Up to 16 commonly-used commands like GOSUB, LIST and STEP can be entered by pressing just two keys. Programs can accept words and names as data (strings of up to 30 characters). Edit and Debug modes make the PC-4 much easier to program than a programmable calculator. The keyboard-with a typewriter-style layout-includes 53 keys for alphabetic input, plus a 10-key numeric datapad. The big l2-character LCD has easy-to-read characters, plus 15 smaller mode indicators. It can handle numbers with exponents of 10 to the 99th power to 10 to the -99th power. Functions include trig and inverse trig, radians or gradians, log, exponent, square root, angular conversions and absolute values. Auto power-off saves battery life. Requires two lithium batteries.

PC-4 Stats

Catalog Number:
26-3650
Year:
1983
Price:
$69.95
CPU:
Custom CMOS VLSI
ROM:
10K
RAM:
1.9K (544 Program Steps; 1,568 with optional 1K RAM module)
Video Size:
12 Character alphanumeric LCD. Lines up to 62 characters.
Keyboard:
53 triple-mode upper/lower case alphabetic keys, 10-key numeric pad
Character Style:
7 x 5 dot matric ASCII.
Graphics:
NONE
String Handling:
LEN, MID, VAL with strings up to 30 characters in length
Power:
2 Lithium Batteries
Measurements:
3/8 x 6-1/2 x 2-3/4″
What was it really?:
Casio PB-100

Accessories

Item
Cat. No.
Initial Price
Picture
Cassette Interface
26-3651
$39.95

Allows you to store and load programs at 300 baud using an optional cassette recorder. Plugs into rear of PC-4. Weighs only 8-1/2 oz, including batteries. Requires two “AA” alkaline batteries.


PC-4 Printer
26-3652
$79.95

Operates under control of PC-4 to print out programs and data. Use as a printing calculator, too. Prints 20 characters per line (60 lpm) in an electro-thermal 5 x 7 dot matrix. Includes rechargeable nickel-cadmium batteries and U.L. listed adapter/charger.


PC-4 Thermal Paper
26-711
$2.19

Package of 5.


1KB RAM Memory Module
26-3653
$19.95

Triples the memory of your PC-4. Gives 1024 steps of additional program and data power. Inserts within PC-4. Only one module may be used.


Carrying Case
26-3654
$7.95

Custom padded vinyl carry case protects your PC-4 Printer and Cassette Interface while you travel or work in the field. Zippered opening. Internal pocket for AC adapter/charger.


PC-4 Programming Guide
XXX
XXX

TRS-80 Pocket Computer – PC-5

[PC-5]

Radio Shack Product Description (RSC-15)

An ideal tool for engineers and students, the PC-5 combines the best features of a powerful scientific calculator and a pocket computer. Performs up to 75 built-in scientific calculations – or write your own programs in BASIC or assembly language. Retains programs and data even when power is off. A built-in Note and Address File keeps important telephone number or engineering data and formulas handy. Features an easy-to-read, 24-character LCD. Uses PC-4 Cassette Interface and Printer with PC-5 Cable (all sold separately). 4K RAM. Includes battery.

PC-5 Specifications:

Catalog Number:
26-3670
Year:
11/30/1985
Price:
$119.95
CPU:
Z80
ROM:
K
RAM:
4K
Functions:
75 Built-In Scientific Functions
Video Size:
24 Characters
Graphics:
NONE
Languages:
BASIC and Assembly Language
Physical Size:
Folds Up to 3/8 x 5-5/8 x 5-5/8″
What was it really?:
Casio FX-780P

Accessories

Item
Cat. No.
Initial Price
Picture
PC-5 Cable
26-3671
$14.95

For use with PC-4 Cassette Interfaec and PC-4 Printer.


TRS-80 Pocket Computer – PC-6

[PC-6]

Radio Shack Product Description (RSC-17)

An ideal tool for engineers and students, the PC-6 combines the best features of a powerful scientific calculator and a pocket computer. Performs up to 65 built-in scientific calculations – or write your own programs in BASIC or assembly language. Retains programs and data even when power is off. A built-in Note and Address File keeps important telephone number or engineering data and formulas handy. Features an easy-to-read, 24-character LCD. Uses PC-4 Cassette Interface and Printer with PC-5/6 Cable (all sold separately). 8K RAM. Folds up to only 3/4 x 1-13/16 x 5-5/8″. Includes battery.

PC-6 Specifications:

Catalog Number:
26-3672
Year:
1987
Price:
$119.95
CPU:
HD61747B20 and HD61747B25
ROM:
???K
RAM:
8K (Expandable to 16K)
Functions:
65 Built-In Scientific Functions
Languages:
BASIC and Assembly Language
Video Size:
24 Characters
Graphics:
NONE
Measurements:
Folds to 3-4 x 1-13/16 x 5-5/8″
What was it really?:
Casio FX-790

Accessories

Item
Cat. No.
Initial Price
Picture
Travel Case
26-3608
$19.95

Holds Printer (with PC-2 installed) and AC adapter/charger. Keeps pens, paper, etc. organized.


PC-4/5/6 Cassette Interface
26-3651
$39.95

Allows you to store and load programs at 300 baud using an optional cassette recorder. Plugs into rear of PC-4. Weighs only 8½ oz., including batteries. Requires two “AA” alkaline batteries.


PC-4/5/6 Printer
26-3652
$79.95

Operates under control of PC-4 to print out programs and data. Use as a printing calculator, too. Prints 20 characters per line (60 1pm) in an electro-thermal 5 x 7 dot matrix. Includes rechargeable nickel-cadmium batteries and U.L. listed adapter/charger.


PC-5/6 Cable
26-3671
$14.95

For use with PC-4 Cassette Interface and PC-4 Printer.


8K RAM Module
26-3674
$19.95

For 16K total memory.


Thermal Printer Paper
65-711
$1.99

1-1/2 x 8-1/2. Package of 5.


Replacement Lithium Battery
23-162
$1.79

TRS-80 Pocket Computer – PC-7

[PC-7]

Radio Shack Product Description (RSC-17)

Keep track of important data and calculations wherever you go with our new PC-7 Pocket Computer. This incredible, compact unit performs up to 72 scientific calculations and 17 statistical calculations. This makes it perfect for engineers, students and professionals who need exact mathematical data rapidly. Mathematical functions include trigonometric, logarithmic/exponential, absolute value, permutations, standard deviation, linear regression and many others. The PC-7 features 2K random access memory and 35 commands in BASIC including: CLEAR, END, INPUT, DATA, READ AND STAT. You can even write your own programs in BASIC! Keyboard composed of 72 keys. Measures 13/32 x 5-1/2 x 7-3/32″.

PC-7 Specifications:

Catalog Number:
26-3673
Year:
1987
Introductory Price:
$69.95
CPU:
HD61913A01
ROM:
12K
RAM:
2K
Video Size:
12 Characters
Graphics:
NONE
Languages:
BASIC
Measurements:
13/32 x 5-1/2 x 7-3/32″
What was it really?:
Casio FX-5200P

Accessories

Item
Cat. No.
Initial Price
Picture
Replacement Lithium Battery
23-162
$1.79

TRS-80 Pocket Computer – PC-8

[PC-8]

Radio Shack Product Description (RSC-19)

Ideal for business people. Do compound interest, installment loans and more. Lets you store frequently used programs in memory. BASIC language includes 24 commands, 27 functions and 10-digit numeric accuracy. Typewriter-style keyboard includes 53 alphabetic keys and a 10-key numeric datapad. A big 16-character LCD scrolls to 80 characters. With batteries and manual.

PC-8 Specifications:

Catalog Number:
26-3655
Year:
1982
Price:
$59.95
CPU:
SC61720D03 (4 Bit)
ROM:
16K
RAM:
1.2K
Video Size:
16 Characters
Graphics:
NONE
Measurements:
3/8 x 5-5/16 x 2-3/4″
What was it really?:
Sharp PC-1246

Accessories

Item
Cat. No.
Initial Price
Picture
Printer/Cassette Interface
26-3591
$119.95

Store and load programs on cassette tapes using an optional cassette recorder. Prints at 24 characters per line (48 Ipm) in an electro-thermal 5 x 7 dot matrix. Includes rechargeable batteries and U.L. listed AC adapter/charger, paper, cable and manual.


Thermal Printer Paper
26-3592
$2.49

Package of 5.


Travel Case
26-3608
$19.95

Holds Printer (with PC installed) and AC adapter/charger. Keeps pens, paper, etc. organized.