Development of Optometer Controlled by Micro-computer
- VernacularTitle:微计算机控制视力检测仪的研制
- Author:
Zhaoping GUO
;
Zujin ZHANG
;
Hui LI
;
Dapeng LIU
;
Hongyuan ZHANG
- Publication Type:Journal Article
- Keywords:
eye-chart;
sing-chip;
C programming language;
interface
- From:
Chinese Medical Equipment Journal
1993;0(05):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To develop a new optometer controlled by micro-computer.Methods With AT89C51 single-chip as hardware and programmed by C language,the instrument applied,the optometer adopted LCD and international standard optotype.The optotype had 14 lines of object-finders,and only one line of random characters was displayed on the screen every time.The optometry distance was 3m.All procedures were controlled by singlechip.Results The case of memorizing eye-chart was avoided and the optometry was every simple.Conclusion The instrument eliminates mirror used for optometry short distance,and the optometry results can be stored and printed.It also has the merits of small volume,precise manufacture,simple operation,low cost and AC/DC power supply.
