Input Ground Technology is the basin tech of Parallel porting or I/O based Systems. If Most of the time its input 1 then we need to add 74ls04 before inputting data to Pin 10,11,12,13,15.
GP I/O Layout
I wrote this in the beginning of times at Abella, Naga City. I tested the circuit using Multi SIM.
ENJOY!!!
Heres a technology famous for years when computer is yet been invented. Once you signal, LEDs at relay are indicator of 1-bit of information. How to refresh all data reading is easy.
Collector Mode Technology by Lawrence Albert Pardo Ilao
Using the latest IT technology and infrustructure, System Logic and Levels now can be detected using computers. We have the Control and Monitoring Technology for industrial Usages.
ARTICLES:
Years back, it fells very old even this technology is very new to everyone, I created TX RX uing rc... with reference to this site and Hong RC. Few months ago this technology are going to one site to another... probably due to extinction of technology, Lets Acquire this from Europe, they derived this one, I cant find anymore the source. Its very good thinking.
Think wider... K
QBasic Code
CLS
DEFINT A-Z
Address = 889: REM 889 = port address, other addresses could be 633 or 957
PRINT "Press the enter key to read printer port pins (15,13,12,10,11)"
PRINT "A (0) reading indicates the pin is at ground level, (1) indicates"
PRINT "the pin is at a high level or unterminated."
INPUT A$
V = INP(Address)
PRINT V
P11 = 1
IF V > 127 THEN P11 = 0: V = V - 128
IF V > 63 THEN P10 = 1: V = V - 64
IF V > 31 THEN P12 = 1: V = V - 32
IF V > 15 THEN P13 = 1: V = V - 16
IF V > 7 THEN P15 = 1
PRINT
PRINT "Pin 15 ="; P15
PRINT "Pin 13 ="; P13
PRINT "Pin 12 ="; P12
PRINT "Pin 10 ="; P10
PRINT "Pin 11 ="; P11
END
Later for VB.Net!!!!
ENJOY
Running your LEDs from the middle is difficult. Heres a way to make it right and easy.
Design in Binary: FINAL CODE
00011000
00100100
01000010
10000001
Matrix LED technology is an advanced lighting system that uses individually controlled LEDs to provide display illumination. This is a very very old LED scanning technology at Matrix LEDs. This is my college degree graduation :D design project using 24 bit I/O ISA CARD 8255 IC, parallel port is 8 to 12 Outputs.
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