http://www.discovercircuits.com/PDF-FILES/5wlamp.pdf
http://www.dallas.net/~jvpoll/dup6m/dup6m.html
Schematics and code for a 68HC11 based frequency counter, square wave synthesizer, sine wave synthesizer, programmable filter, capacitance and inductance meter, with a digitalker speech synthesizer output.
http://members.tripod.com/michaelgellis/68hc11.html
http://xoomer.virgilio.it/lorgler/sw-eprom.htm
High accuracy RPM-measurement with 68HC11.
http://space.tin.it/computer/lorgler/sw-step.htm
use a 68HC11 and a 12-bit serial DAC to generate accurate sine waves without using floating-point arithmetic
http://www.edn.com/archives/1996/090296/18di1.htm
This is a normal cathode-grounded-bias-less amplifier.
http://www.intio.or.jp/jf10zl/6AR5.htm
It has about 20dB gain. With 100mW transceiver, 2W power output can be achieved.
http://www.intio.or.jp/jf10zl/6cl6.htm
http://www.aaroncake.net/circuits/6-12conv.htm
LED matrix sign circuit. It has an eprom and multiple counters. As in most electric signs, the LEDs are matrixed, and strobed very quickly to make it possible for all 70 LEDs to appear lit.
http://www.bobblick.com/techref/projects/ledsign/ledsign.html