Search found 316 matches
- Sun Mar 16, 2014 3:45 pm
- Forum: General Discussion
- Topic: need suggestions - GPS clock
- Replies: 21
- Views: 10187
Re: need suggestions - GPS clock
If you need to drive 7 segment LED displays you could use ICM7211A (4 digits) or ICM7218 (8 digits) to drive the display. The microcontroller just write the pattern into the chips, like 4 or 8 byte memory, and they take care of all the multiplexing of the displays. It was Intersil that came with the...
- Tue Oct 30, 2012 6:57 am
- Forum: General Discussion
- Topic: WHERE ARE THEY?
- Replies: 32
- Views: 18806
Re: WHERE ARE THEY?
I'm hanging around several forums doing electronics, not posting too much any more. From what I see, you can put the average advice concerning building electronics in two buckets. If you can't us a 555 to solve the problem, you need a microcontroller (picaxe/ arduino/ plain PIC processor) to solve i...
- Tue Oct 30, 2012 6:02 am
- Forum: General Discussion
- Topic: Decimal to seven segment conversion...
- Replies: 9
- Views: 5031
Re: Decimal to seven segment conversion...
If you have found your solution, good. If not, I will come back with my old idea of using some old eproms if you got them. A 2716 2k eprom would do what you need if programmed correctly. The address lines are the inputs(10(11)) and the data lines the outputs(8). So if you have some 2716 or higher la...
- Tue Feb 28, 2012 4:39 am
- Forum: General Discussion
- Topic: Battery Shock!!
- Replies: 16
- Views: 12259
Re: Battery Shock!!
I had a friend stop over recently with an old portable tube radio. You old timers will remember, the IU4, IT4, 3V4... He was interested in getting it operating again just for grins. That quickly got shelved when we looked for the batteries. The 'B' battery, 67.5V is $60+ and the 7.5V 'A' battery we...
- Sat Jul 02, 2011 3:43 pm
- Forum: General Discussion
- Topic: is everyone on vacation ?? no activity here since the 19th
- Replies: 26
- Views: 12123
Re: is everyone on vacation ?? no activity here since the 19
I'm also around at uneven intervals. I've been without a private PC for some months, but are now up and running again. One thing I see is that this forum tends to become an exclusive US dominated forum. I think it was a bit more diverse before, but I may be wrong. As a foreigner, the discussions of ...
- Thu Jan 13, 2011 4:07 am
- Forum: General Discussion
- Topic: What is the "complement" to the 74LS154?
- Replies: 5
- Views: 3179
Re: What is the "complement" to the 74LS154?
You could make the 16 to 4 decoder yourself with a eprom(or flash) with 16 address lines, like the 27(8/9)xx512. Program it for the different values and get whatever combination outputs you want. I have never heard about a 16 to 4 bit decoder or priority encoder type chip.
TOK
TOK
- Wed Nov 10, 2010 7:05 am
- Forum: General Discussion
- Topic: Is this forum dying?
- Replies: 30
- Views: 15374
Re: Is this forum dying?
I have to admit that I only occationally take a peep in here. We had a period of repeated 'trolling' here, and I think that turned me off. I used to like to be here, but from what I see now there are little activity with the general themes we had before. Living in Europe I have little knowledge and ...
- Fri Aug 27, 2010 6:52 am
- Forum: General Discussion
- Topic: Nuts and Volts vol 1. No. 1
- Replies: 10
- Views: 7326
Re: Nuts and Volts vol 1. No. 1
Have you guys thought about making a CD collection on all the old volumes of NV?
I would love to have a copy since I never saw these distributed in Norway at the time.
We can't all just pop in and have alook ourself
A digital library of NV so to speak?
TOK
I would love to have a copy since I never saw these distributed in Norway at the time.
We can't all just pop in and have alook ourself
A digital library of NV so to speak?
TOK
- Sun Sep 06, 2009 11:45 am
- Forum: General Discussion
- Topic: What Microcontroller Language do you prefer?
- Replies: 19
- Views: 17241
Re: Microcontroller Language Poll
I've used assembler for embedded projects at work and private for 30+ years, and I'm starting on C now, at least at work. If you use assembler, you get closer to the hardware. If you are programming an 8-bit micro you'll always need to get very close to the hardware anway, and any higher level langu...
- Tue Apr 21, 2009 11:17 pm
- Forum: General Discussion
- Topic: "Counters" day coming soon...
- Replies: 10
- Views: 4840
Re: "Counters" day coming soon...
I really have to remember this, since I have my birthday the 9.9.09
TOK
TOK
- Mon Jun 16, 2008 2:07 pm
- Forum: General Discussion
- Topic: Early Microcontroller Info
- Replies: 5
- Views: 4026
- Thu Nov 15, 2007 9:10 am
- Forum: General Discussion
- Topic: Ice detector
- Replies: 20
- Views: 11197
- Thu Jun 21, 2007 2:38 pm
- Forum: General Discussion
- Topic: Measuring 220 AC with an ADC
- Replies: 21
- Views: 11817
- Thu May 03, 2007 2:53 pm
- Forum: General Discussion
- Topic: Assembler Reference Z180
- Replies: 2
- Views: 2818
- Mon Apr 30, 2007 5:46 am
- Forum: General Discussion
- Topic: Rookie Frequency Divider Question
- Replies: 17
- Views: 8582