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?@?R???g???[???Ƃ??āuHD44780?v?𗘗p?????t???f?B?X?v???C?i?ȉ??AHD44780 LCD?j?́A?g?ݍ??ݑ??u?p?̉p?????\????Ƃ??čł????y???Ă?????̂ł???B???̗B??̌??_?́AHD44780?̃C???^?[?t?F?[?X???p???????ł??邽?߁A4?r?b?g??1?̒P?ʂƂ???j?u?????[?h?ł?6?{??I/O?[?q???K?v?ƂȂ?A8?r?b?g??P?ʂƂ??郂?[?h?ł?11?{????I/O?[?q??K?v?Ƃ??邱?Ƃ??B???̌??_?ɑ??āA?K?v??I/O?[?q?̖{?????팸???邽?߂̒?Ă??A?{?R?[?i?[?ł?????܂łɂ??????Љ??Ă?????1) ?C??2) ?C??3)?B
?@HD44780 LCD???邢?͓????i???쓮????ɂ́A?R?X?g???X?y?[?X?̖ʂ???́A???W?b?N??H?????}?C?N???R???g???[?????g?p????ق????L???ł???B?܂??A????????A?@?\???v???O???}?u???ɂȂ?Ƃ????????b?g??????B?g?p?ł???ł????^?Ȑ??i?Ƃ??Ă͕?Microchip Technology?А??́uPIC10F?v?t?@?~????????A???̃p?b?P?[?W??6?[?q??SOT-23?ł???B
?@?}1?̉?H?́A??9600?{?[??RS-232?v???g?R???̒P???V???A???ʐM?ɂ???āAHD44780 LCD?܂??͓????i???쓮????B?[?q???ɐ????̂???g?ݍ??݃V?X?e???ł͏d?邾?낤?B?}?C?N???R???g???[??IC1?Ƃ??ẮuPIC10F202?v???g?p???Ă??邪?APIC10F?t?@?~???̂ق??̐??i???g?p?ł???B???̃|?C???g?́A?g?p????A?Z???u???v???O?????????x?ɍœK?????????Ƃł???A???v???[?h?????????Ă?256???[?h?ōςށB?ʐM???x?ɂ??ẮAIC1??????????RC???U??H?̎??g???덷??1???ł??邱?ƁA?܂??u?\???????v?Ȃǂ̈ꕔ?̋쓮???߂ł?1.6ms?̒x?????????邱?Ƃ???A9600?{?[?ȏ?ɂ???͖̂??ʂł???B
?}1?@HD44780LCD???쓮?????H?r??
??1?cRaynus, Abel, "Squeeze extra outputs from a pin-limited microcontroller," EDN, Aug 4, 2005, p.96.
??2?c"Microcontroller provides low-cost analog-to-digital conversion, drives seven-segment displays," EDN, May 10, 2007, p.80.
??3?cNiven, Rex, "RC lowpass filter expands microcomputer's output port," EDN, June 21, 2007, p.74.
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