SHAOS » electronics

Handwritten blog 9,10

Shaos — Tue, 27 Jul 2010 05:00:15 +0000

Now I’m thinking about building binary circuits based on 74F00:

Handwritten blog 7,8

Shaos — Mon, 19 Jul 2010 00:32:37 +0000

Explanation of idea about ternary hardware based on DG403 switches and also attempt to apply the same approach to 4-value logic:

Ternary Hardware – CMOS switches

Shaos — Sat, 10 Jul 2010 23:47:47 +0000

DG403: one chip with resistors

Here I use undocumented feature of DG403 when normally closed switch opened by voltage lower than required to close another (normally opened) switch. Variable resistor is used to move that “both-opened” window to ternary “0″ zone (up from -3.0V…-0.8V to cover 0V).

DG403: two chips - no more components

Second scheme is more “correct” (nothing from undocumented features were used).

P.S. Ternary selector may be used as ternary inverter when RP=-5V, RO=0V, RN=+5V. See more details on www.ternary.info

Handwritten blog 6

Shaos — Sun, 06 Jun 2010 19:25:59 +0000

Another portion – now about extension of 3niti alpha simu1 board:

Ternary Morse Link

Shaos — Sun, 23 May 2010 16:50:23 +0000

Way to convert Morse code to balanced ternary code and back:

Ternary Morse Link Diagram

For more details see our ternary forum

Handwritten blog 2,3,4,5

Shaos — Sat, 16 Jan 2010 05:33:00 +0000

Again some handwritten ideas about implementation of microprogrammed hybrid of 8080/8085 and 6502/65C02 processors:

2nd test of binary board for ternary computer

Shaos — Sat, 28 Nov 2009 06:38:00 +0000

Today I created second test for my quasi-ternary board – it is a ternary clock:

More about board is here

1st test of binary board for ternary computer

Shaos — Sun, 18 Oct 2009 04:46:00 +0000

Today I did real test of this board with simple test program inside pic16f870 that reads “ternary” input (15 3-position slide switches) and sends it to “ternary” output (15 red-green LEDs):

See details about this board here

Beige G3 as lab PC

Shaos — Fri, 09 Oct 2009 01:57:00 +0000

After some evenings I had increased screen size of my Beige G3 from 800×600 to 1152×864 (65536 colors):

Then I installed 2 cheap ($20 each) PCI-cards in it: first is 2xCOM-ports:

and second is 1xLPT-port:

Basically it is the same card with different assembling.

Now I can use it as a regular Linux PC for example to connect El Cheapo PIC-programmer to Debian’s Piklab:

Kernel recompilation was required to allow using of module ppdev that creates device /dev/parport0

So this machine officially became my hobby lab machine

P.S. Unfortunately I was not able to run on this machine any USB PCI-card that I had…

Handwritten Blog

Shaos — Tue, 21 Apr 2009 01:13:00 +0000

I have electronic pen FLY Fusion that can convert anything written on special paper to computer image:

So I decided to start publishing my personal Russian/English notes as handwritten digitized images (some kind of handwritten blog):