http://www.projects.scorchingbay.nz/dokuwiki/ 2026-10-06T23:42:01+00:00 http://www.projects.scorchingbay.nz/dokuwiki/ http://www.projects.scorchingbay.nz/dokuwiki/_media/favicon.ico text/html 2026-09-05T04:56:59+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.projects.scorchingbay.nz/dokuwiki/electronic/datasheet/mostek/mk5012?rev=1788584219&do=diff Pinout 12-digit calculator, 4 function N1, N2, N4, N8 are number inputs using diode matrix keyboard encoding SP1, SP2 are decimal point placement inputs for 0, 2, 3, or 4 places Calculators that used MK5012 text/html 2026-09-21T11:26:35+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.projects.scorchingbay.nz/dokuwiki/electronic/datasheet/mostek/mk5021?rev=1789989995&do=diff Pinout MK 5021C - 10-digit calculator, 6 function (+, -, x, /, %, SQRT) Keyboard Matrix: KN KO KP KQ D1 1 + dp1 D2 2 x dp2 D3 3 � dp3 D4 4 - dp4 D5 5 += dp5 D6 6 -= dp6 D7 7 +/- dp7 D8 8 = dp8 D9 9 . dp9 D10 0 CE dp0 K D11 % C text/html 2026-09-05T04:57:39+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.projects.scorchingbay.nz/dokuwiki/electronic/datasheet/mostek/mk50311?rev=1788584259&do=diff Pinout 8-digit calculator, 9 function (+, -, x, /, %, $, SQRT, X^2, 1/X), seven memory functions Keyboard Matrix: KN KO KS Note: KS = KN && KO D0 CM D1 1 % D2 2 sum = D3 3 M-= M- D4 4 SQRT X^2 D5 5 1/X . D6 6 $ / D7 7 M+= M+ D8 8 XM x D9 9 MS - D10 0 MR + D11 C/CE Note: D0, D10, D11 are for keyboard matrix only text/html 2026-09-05T04:57:57+00:00 Anonymous (anonymous@undisclosed.example.com) http://www.projects.scorchingbay.nz/dokuwiki/electronic/datasheet/mostek/mk50312?rev=1788584277&do=diff Pinout 8-digit calculator, 9 function (+, -, x, /, %, $, SQRT, X^2, 1/X), seven memory functions Keyboard Matrix: KN KO KS Note: KS = KN && KO D0 CM D1 1 % D2 2 sum = D3 3 M-= M- D4 4 SQRT X^2 D5 5 1/X . D6 6 $ / D7 7 M+= M+ D8 8 XM x D9 9 MS - D10 0 MR + D11 C/CE Note: D0, D10, D11 are for keyboard matrix only