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Computer Interfaces
Page 11 Computer Interface: #A-BCD-EF-HI J-LMN-OP-QR ST-UV-Z Last Updated on:
Monday, October 03, 2011 06:07 PM
Links to electronic circuits, electronic schematics, designs for engineers, hobbyists,
students & inventors:
R5000 Receiver Interface - This circuit is a modified version of
an original interface on QSL Net....
Radio Clock for PC's - There are a number of low frequency time
signals around the world that broadcast accurate time and date
information. These signals are used by the many cheap radio controlled
wall.... [Jonathan A. Buzzard]
RC5 Infrared Remote Control Receiver for Media Centers - A few
time ago I decided to create a media center box to replace my DVD player,
satellite receiver, VCR and my kid's Play Station 2, to one device. So, I
made a core 2 duo processor system that actually replaced with succeed,...
Reading Data from the Parallel Port - The diagram below shows 5 switches
connected to the 5 input lines of the parallel port. An external 5 volt power
supply is used to provide high logic levels to the input pins when the switches
are open. Three 1.5 volt batteries in series can be used to obtain 4.5 volts which
is close enough. The 330 ohm resistors ….(circuit diagram added 6/07)
Rectifier Tracks Positive & Negative Peaks - 06/08/06 EDN-Design Ideas
Versatile precision rectifier also delivers full-wave output....[Design Idea added
05/06/07] EDN is migrating links. This link is not verified. Search the
"title" + EDN for new link.
REMOTE[RS232] using Easy-Server V0.9 - Experiment the microcontroller
with internet server. The Easy-Server provides simple means for connecting
microcontroller through a 9600 8n1 serial interfacing. Exemplary circuit using
PIC16F84 for REMOTE RS232 and experiment description were included. (circuit
added 09/09)
Reset Card Eases µP Troubleshooting - 10/26/95 EDN-Design Ideas
The circuit in Fig 1a generates repetitive system resets to 68XXX processors.
These resets allow you to troubleshoot power-up problems using a scope instead of
a logic analyzer or storage scope. This reset card, which you can build for
less than $10, consists of a DIP switch,....[Design Idea added 2/06] EDN is
migrating links. This link is not verified. Search the "title" + EDN for new
link.
Reset ICs create sequenced or long resets - 11/20/97 EDN-Design Ideas
Reset-generator ICs offer an inexpensive way to generate reliable reset signals
for µC and µP applications. Certain applications, such as multiple-processor
systems, require multiple resets…. [Design Idea by Doug Anderson, Electronic
Technology Corp, Ames, IA]
Resistor implements half duplex RS232 with echo - 11/24/99 EDN-Design
Ideas:....[Design Idea added 11/05] EDN is migrating links. This link is not
verified. Google the "title" EDN for new link.
ROM Emulator - This is a very simple ROM emulator. It can only "Load and
Run", because reduced unnecessary functions and reduced board size, so it is good
for portable use. (added 10/05)
Routine provides four COM port recognition - 02/01/96 EDN-Design Ideas
In DOS-based computers with serial ports besides COM1 and COM2, the DOS-booting
process does not recognize the additional ports. The BIOS RAM location00000411
holds (among other data]a 3-bit count of the number of installed serial
ports--enough for seven COM ports. DOS, however, recognizes and loads BIOS RAM....EDN
is migrating links. This link is not verified. Search the "title" EDN for
new link.
