PPNW #7/12 - Printing prime numbers with Casio fx-880p, SB-44 and FP-40 printer || Casio.ledudu.com

The SB-44 is the special device to plug a fx-880p (or either model of the series - casio.ledudu.co...) to a fp-40 printer.
10 INPUT N
20 N=N+2:D=1
30 D=D+2:IF FRAC(N/D)=0 THEN 20
40 IF (D+2)^2 ˂= N THEN 30
50 PRINT N;
60 GOTO 20

[@m80116]

Amazing working pair... 👍

[@littlereptilian7580]

Thanks i was searching for this. I have a fx8000g and always wondered how tge print port works

[@tomlake2732]

How do you get the FP-40 to single space the lines when LISTing the program? I always get a blank line between lines on mine.

[@ledudu13]

Hello Tom,
From what computer do you try to list ? What SB interface model ?

[@tomlake2732]

@ledudu13 I use an FX-890P connected to an FA-6 and from there to an SB-43 interface. I found the problem, however. The 4-position DIP switch on the FP-40 was installed backward! Instead of changing switch 1 to change the spacing, I was actually changing switch 4. When I disassembled the FP-40, I saw that the numbers on the DIP switches were the opposite of the silk-screening on the circuit board. Now that I knew that, I changed the correct switch and am now getting single-spacing.1`

[@ledudu13]

@@tomlake2732 Thanks for sharing this clue !

[@jorgebeyer9499]

Necesito cotizar precio de calculadora casio 880 con cable para bajar datos más su estuche correspondiente , cuanto vale

[@alfredopascual1615]

How about Fx603p, still available