This simple PC Smartcard reader was shown in Electronics Design magazine February 17, 1997 issue on page 172 in the ideas for design secation. The circuit is designed by Jose Carlos Cossio and is based on simple smartcard reader design shown on the same magasine July 8, 1996.
This circuit takes all smartcard operating power form PC parallel port. The basic circuit idea is quites imilar to thw simple smartcard reader shown in What you need to know about electronics telecards written by Stephane Bausson. There are some minor differences, which means that all the same software can't ne used.
PC
Parallel
port
25 o---------------------------------------------------------------+
GND |
ISO layout |
|
/---------+--------\ |
+------| VCC | GND |--------------+
D2 | |------\ | /-----+ |
4 o----------------------)------| R/W \ | / Vpp |--------+ |
D1 | +--------( )-------+ | |
3 o----------------------)------| CLK / | \ I/O |----+ | |
D0 | +------/ | \-----+ | | |
2 o----------------------)------| RST | Fuse | | | |
| \---------+--------/ | | |
Busy | | | |
11 o----------------------)------------------------------+ | |
| | |
+----------------------------------+ |
D3 |\ | | |
5 o-----------| >+-------+ |
|/ | | || |
+------------||--------------------------+
D4 |\ | | ||
6 o-----------| >+-------+
|/ | | 100 nF
|
D5 |\ | |
7 o-----------| >+-------+
|/ | |
|
D6 |\ | |
8 o-----------| >+-------+
|/ | |
|
D7 |\ | |
9 o-----------| >+-------'
|/ |
5 X 1N4148
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