摘要
普通相片扩印机配备的爆光定时器是用模拟电路制做的.本文作者用PIC16C54单片机设计了数字化的爆光定时器,其特点是定时准确,重复精度好,并可按10%比例加减剥光定时量.
Flashing & timing controller equipped by ordinary photo enlarged machine ismade of analog cirdrit. The author of this paper designed a timing digital controller based on sin-gle chip compuer of Model PIC6C54, which has advantages of timingaccurately, well precised repeat. Also quantity of flashing & timing can be increased or reducedaccording to the ratio of 10 percent.
