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World of Ham Radio 1997
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1997-02-01
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71 lines
MR. Resistor 2.0 for Windows 3.x
by Gary Rennie
Howell, Michigan
ham radio call KC8BN
March 21, 1995
Mr. Resistor is an electronic thumbwheel guide for carbon
composition resistors. I had ported the original
DOS application to run in the Windows environment using
Visual Basic 2.0 The program appeared sluggish but was
quite functional under WINDOWS. I hope ham radio buffs,
electronics fans, students, and technicians may find this
program helpfull. I make no warranties about it's accuracy
and you use it at your own risk. I have released it in the
public domain. With release 2.0 the program has grown in size
along with a Windows Help file. There is now a significant
increase in speed as the program runs. The program is now
written in Visual Basicc 3.0.
1.0.0 INSTALLATION OPTIONS
You MUST have the file VBRUN300.DLL in your WINDOWS directory
to run this program. If you don't have it, it can be obtained
perhaps on this and or other on line services. Either create
a seperate directory for Mr. Resistor or copy the files MRESIST.EXE
and MRESIS.ICO to whatever directory you may choose. Install the
program via the WINDOW's SETUP utility and choose the MRESIS.ICO
if you like.
1.1.0 AUTO INSTALLATION
The installation process has been automated. Run "SETUP" from the
floppy that has the Mr. Resistor files within the File Manager or
Program Manager of Windows.
2.0.0 RUNNING MR. RESISTOR 2.0
Point and click at the control button for each band. You may
TAB over if you like and press [RETURN] also. Staying on each
band will cycle through all the available values for that band.
The drop down menus offer additional information about carbon
compostion resistors along with the option to exit the program.
Your actual displayed colors may vary depending on the adjustment
and type of monitor/driver system you may use.
Notes: The color bands were created out of the windows POLYGON
fill calls with each band being an array of the polygon
coordinates. Many Window's services calls be reached
thru Visual Basic, though the documentation may not
define them them for you, they can be found with additional
reading in various publications such as the Waite Group's
"VISUAL BASIC BIBLE" or the "VISUAL BASIC How-To" books.
These books are GREAT for anyone serious about Visual Basic
programming in Windows. Bitmap switching is now used to
speed up the color update process.
The files of this complete installation are as follows:
VBRUN300.DLL --- Visual Basic 3.0 runtime DLL
MRREAD.TXT --- this file you're reading now
MRESIS.ICO --- WINDOWS icon for Mr. Resistor
MRESIS.HELP --- WINDOWS Help File for Mr. Resistor
(Must be in the same directory as MRESIST.EXE)
MRESIST.EXE --- Mr. Resistor run file
(the VBRUN300.DLL run file must reside in the
\WINDOWS directory for Mr. Resistor to run)
enjoy the the program as you graphically search for resistor values!