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Had to look that one up:? transformer read only storage? Now that's how a real programmer writes his code. None of this sissy IDE stuff. In the rope format,? it was TROS in the Apollo guidance

My father worked at IBM during the days of core storage. I remember touring the Poughkeepsie plant and watching the cores being strung by hand under strong magnifying lenses and bright lights. You

Actually, JackAl has very little to do with my FDIM presentation, which is on homebrewing. The JackAl board will be shown at the Show-and-Tell, which I think is Friday evening. Jack, W8TEE

Might as well publish your "JackAl" FDIM presentation, Jack. We can all "proofread" it for you.? 73 Kees K5BCQ

DuWayne's note was? ?/g/BITX20/message/47837? ? We need a better indexing to find "stuff" with 2000 messages per month.? 73 Kees K5BCQ

We're also using SPI on the 5" and 7" displays. Jack, W8TEE

As i recall from memory there are others in that series of MCP3xxx that have dual S&H and maybe 4 channels... and for some reason cheaper than the 3202? Maybe 3204? (Working without datasheets

Bill, Yes, that's much better ...MCP3202. Thanks !? I figure SPI is coming anyway because the little inexpensive (~$8) 2.8" TFTs are SPI and would make a great readout (and use existing 4 LCD pins

As far as a quick and easy "Antenna Confirmation", I still like that little circuit Don, ND6T, came up with....and maybe others out there. Just a broadband noise generator and tune for the null with

Put money on it...his real name is NOAH :-)

Possible. SPI interface, so 4 new Nano pins.? ? Could be OK if display goes to SPI. Two channels but only one internal S/H.? However SPI is fast enough to ignore the lag between channels.

I think the MCP 3202 is 12 bit w/ S&H and pretty cheap... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois

Could maybe build a S/H from a 2n7002 and a cap, hard to beat the price. Not sure it would perform very well, depends on the input impedance of your ADC? (or perhaps of some voltage follower you

One possible alternative for a S/H ADC (12bit, 2 input, 2.5V input, 5V Vcc, etc) is the older ADC12130. Is there a newer and less expensive version out there ? 73 Kees K5BCQ

I spent many hours watching the IBM ladies from New York restringing cores on core memory planes at NASA and punched some new TROS tapes myself. 73 Kees K5BCQ

Concrete is apparently conductive enough. A really good ground can be had by tying into the rebar (steel reinforcement bars) embedded in a basement wall or the footing of a building or a concrete slab

On Wed, May 9, 2018 at 11:26 pm,? I am confused.? Maybe some of you slide rule types can help me figure this out.? Why would we only discuss the ?BITX on a list started (and titled) about 14

We still have some RadI2Cino (I2C replacement card for the Raduino) kits available and are sweetening the pot a little by including at no extra charge an adapter card that will allow the use of a

And it tells us something about the people we are interacting with daily in further developing the uBitx. An important part of communicating better.

Having said that, I can outdo you all.? When I started in data processing, we didn’t even have punch-cards.? We used rolls of papyrus with holes punched in by hand using a hammer and wooden