Computer Clubs
WML TRS-80 Computer Group c/o Steve Bergers 2040 Janes Avenue NE Grand Rapids, Ml 49505 1-616-3636-3561
Appraiser's TRS-80
c/o Dan D. Swearingin, MAI, SREA
1215 Fruit, NW
Albuquerque, N.M. 87102
1-505-842-1700
Radio Shack's TRS-80 Digitizer is versatile enough to digitize from many surfaces, including your video display (as shown on this month's front cover). The adjustable crosshair piece gives you even more flexibility.
2 TRS-80 Microcomputer News, April 1982
Volume 4, Issue 4
TRS-80 Microcomputer News: ® 1982 Tandy Corporation, Fort Worth, Texas 76102 U.S.A. All Rights Reserved
Reproduction or use, without express written permission from Tandy Corporation of any portion of the Microcomputer News is prohibited. Permission is specifically granted to individuals to use or reproduce material for their personal, non-commercial use. Reprint permission for all material (other than William Barden's article), with notice of source, is also specifically granted to non-profit clubs, organizations, educational institutions, and newsletters.
TRS-80 Microcomputer News is published monthly by Radio Shack, a division of Tandy Corporation. A single six month subscription is available free to purchasers of new TRS-80 Microcomputer systems with addresses in the United States, Puerto Rico, Canada and APO or FPO addresses. Subscriptions to other addresses are not available.
The subscription rate for renewals and other interested persons with U.S., APO or FPO addresses is twelve dollars ($12.00) per year, check or money order. Single copies of the Microcomputer News may be purchased from Radio Shack Computer Centers or Computer Departments for $1 50 (suggested retail) each. The subscription rate for renewals and other interested persons with Canadian addresses is Fifteen dollars ($15.00) per year, check or money order in U.S. funds. All correspondence related to subscriptions should be sent to: Microcomputer News, P.O. Box 2910, Fort Worth, Texas 76113-2910.
Retail prices in this newsletter may vary with individual stores and dealers The company cannot be liable for pictorial and typographical inaccuracies.
Back issues of Microcomputer News prior to January, 1981 are available through your local Radio Shack store as stock number 26-2115 (Suggested Retail Price $4,95 for the set). Back issues of 1981 copies are not available.
The TRS-80 Newsletter welcomes the receipt of computer programs, or other material which you would like to make available to users of TRS-80 Microcomputer systems. In order for us to reprint your submission, you must specifically request that your material be considered for reprinting in the newsletter and provide no notice that you retain copyrights or other exclusive rights to the material. This assures that our readers may be permitted to recopy and use your material without creating any legal hassles.
Material may be submitted by mail to PO. Box 2910, Fort Worth, Texas 76113-2910, or through CompuServe. The Microcomputer News' CompuServe user ID number is 70007,535.
Notes to Program Users:
Programs published in the Microcomputer News are provided as is, for your information. While we make reasonable efforts to ensure that the programs we publish here work as specified, Radio Shack can not assume any liability for the accuracy either of the programs themselves, or of the results provided by the programs.
Further, while Microcomputer News is a product of Radio Shack, the programs and much of the information published here are not Radio Shack products, and as such can not be supported by our Computer Customer Service group. If you have questions about a program in the Microcomputer News, your first option is to write directly to the author of the program. When possible, we are now including authors' addresses to facilitate communications. If the address is not published, or if you are not happy with the response you get, please write us here at Microcomputer News. We will try (given the limited size of our staff) to find an answer to your question and, in many cases, will publish the answer in an up-coming issue of Microcomputer News.
Comments on our program listing style:
In order to make the program listings we publish easier to read, we have adopted a style of inserting spaces to enhance readability, and we separate each program statement onto a separate line. While these techniques increase program readability, they also require more memory, and may execute more slowly then the original program did.
When you are entering a program for your own use, you may wish to eliminate many of the extra blanks (see your owners manual for required blanks), and you should certainly move multifile statements up to a single line where possible.
Trademark Credits
APRIL, 1982
Price $1.50
CompuServe™ DIP" Dow Jones NEWS/RETRIEVAL
Service® Personnel Manager™ Project Manager™ ReformaTTer™ Time Manager™ VisiCalc®
CompuServe, Inc. Software Arts, Inc.
Dow Jones & Co., Inc. Image Producers Image Producers Microtech Exports Image Producers VisiCorp™
Program Pak™ Tandy Corporation
SCRIPSIT™ Tandy Corporation
TRSDOS™ Tandy Corporation
TRS-80® Tandy Corporation
TRS-80 Microcomputer News
Information Published for TRS-80 users. ■
Contents:
Assembly Language Programming...................................................8
by William Barden, Jr. Color Computer
Product Line Manager's Page ................................................41
Questions and Answers Programs
Hi-Res Character Generator by Ron Van Dyke.............................46
Linefeed With Carriage Return by Ed Hamilton.............................45
Merge Cassette Programs by Jorge Mir..................................42
Perpetual Calendar by Kenneth Heberle..................................43
Printer Calendar by Harry Stern ........................................43
Revisions, Enhancements, Etc................................................42
Computer Clubs ..............................................................2
Computer Customer Service..................................................13
SCRIPSIT Ideas
Notes From Computer Customer Services.......................................14
Data Bases
CompuServe .............................................................15
Network Expansion
Phone Numbers .....................................................48
Dow Jones...............................................................17
Sports Data Base Educational Products
Graphical Analysis of Experimental Data ........................................29
Interpreting Graphs in Physics................................................31
Southern New Jersey Computer Awareness Project................................32
Feature Story
Non-Printer Peripherals ......................................................5
Fort Worth Scene.............................................................2
General Interest
Compound Interest by Mike Riggs............................................20
Wind Chill Factor by Bill Clough...............................................7
Model I/III
Bugs, Errors, and Fixes
Accounts Payable (26-1554) ............................................ 21
Accounts Receivable (26-1555)..........................................21
Manufacturing Inventory Control (26-1559) .................................21
Medical Office System (26-1568)......................................... 22
TRSDOS Model III (26-312) ............................................21
Product Line Manager's Page ................................................19
Personnel Manager Programs for Models I and III
Arrays by Linda Miller................................................23
Array Input Routine by Louis Self .......................................24
Client Activity Information Array by Kenneth E. Robinson .....................25
Disk Head Cleaner by Lowell Johnson ...................................16
Revisions and Enhancements ................................................22
Model II
Bugs, Errors, and Fixes
Accounts Payable (26-4505) ............................................36
RSCOBOL (26-4703 and 26-4704) ....................................... 36
Product Line Manager's Page ................................................33
SCRIPSIT 1.0 vs. SCRIPSIT 2.0 Programs
Statistical Analysis by W. W. Schumacher .................................35
Revisions, Enhancements, Etc................................................36
Notes on Previous Issues
December, 1981 Model I/III Calendar Progr&m..................................28
January, 1982 VisiCalc Model ................................................28
Peripherals
Bugs, Errors, and Fixes
Line Printer VII (26-1167)...............................................7
Revisions, Enhancements, Etc.................................................7
Pocket Computer Programs
Compound Miters by Bruce K. Taub.....................................40
Cub Scout Song by Jules L. Schafer ....................................40
Multiple Linear Regression by Garland Bryant .............................38
Pythagoras' Theorem by J. Strolin ......................................40
Step-Saving Ideas by Leonard Levine....................................37
Revisions, Enhancements, Etc................................................39
..View From the 7th Floor by Jon Shirley..........................................4
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