10 display VF pins.

[koolguy]

Hi, i got VF from my old Casio calculator it have 10 blue color display the pins are name as

VF S6 D12 S7 D11 S5 D10 D9 S4 D8 D7 D6 D5 DP D4 D3 S3 D2 S2 D1 S1 VF

i think S is for segment, D is for display..., but what about supply connection??

i don't know how to use this displays.
its no. is ld8197a

 

[blueroomelectronics]

Stop pulling old junk apart and read a book instead. You might learn something.

 

[koolguy]

Here is the image of it.

 

[blueroomelectronics]

That's nice, perhaps you could take a blurrier photo next time. Do you even bother reading replies?

 

[koolguy]

Do you even bother reading replies?

Yeh, i read the reply ...!!

 

[blueroomelectronics]

It's a high voltage VFD display, you'd need something like an old Nixie tube driver to get it lit.

Stick with your 8085 studies, make an effort to focus on one subject at a time. In no time you'll be computing like it's 1977.

Want a nice easy to learn MCU, try the ancient CD1802 from RCA. Only had 30 or so instructions but it was SOS and good enough to be put into space probes.

 

[koolguy]

Want a nice easy to learn MCU, try the ancient CD1802 from RCA.

Hi, i get but it was in old Chinese web.

 

[koolguy]

It's a high voltage VFD display, you'd need something like an old Nixie tube driver to get it lit.

Nixie tube need near by 220V, but this VF were used in small calculator that mean it circuit give high voltage if you tell me about how to give it supply rest of work i can do my self.

 

[blueroomelectronics]

Why not use LEDs. Much easier to drive. You really ought to make an effort to focus on one problem at a time.

 

[blueroomelectronics]

Hi, i get but it was in old Chinese web.

What's in old Chinese web?

 

[koolguy]

Why not use LEDs. Much easier to drive. You really ought to make an effort to focus on one problem at a time.

Because, i know LED & it takes more spaces while this VF is good in view & small in size that's why.

 

[koolguy]

Want a nice easy to learn MCU, try the ancient CD1802 from RCA. Only had 30 or so instructions but it was SOS and good enough to be put into space probes.

i am not getting any good links for it, i think it is very very old MCU.

 

[Nigel Goodwin]

i am not getting any good links for it, i think it is very very old MCU.

It wasn't a micro-controller, it was a VERY old micro-processor - it was used on space probes because it was low power CMOS, could easily be programmed remotely, and was fairly impervious to radiation of various types. However, I don't recall it only having 30 instructions?.

Check here:

RCA 1802 (CDP1802) microprocessor family

Interesting to read they did make a micro-controller version, the 1804.

 

[koolguy]

Hi, how to get these processor circuit, i want see how big it is.

 

[Nigel Goodwin]

Hi, how to get these processor circuit, i want see how big it is.

Why would you want to try and find a 30 year old low spec processor?.

 

[koolguy]

I want to learn it from basics & the circuit may be of any processors.

 

[Nigel Goodwin]

Choose a PIC or an AVR then, no point in ancient obselete technology.

 

[blueroomelectronics]

My mistake, the CDP1802 had 91 instructions.

Our OP might want to learn the instruction set for the CPU inside his Windows computer. It'll be based on the ancient 8088.

 

[Nigel Goodwin]

My mistake, the CDP1802 had 91 instructions.

Our OP might want to learn the instruction set for the CPU inside his Windows computer. It'll be based on the ancient 8088.

You're assuming he's running Windows?

 

[blueroomelectronics]

In one of his multiple threads he stated he's running Windows.