[Digital radiation monitoring system with a personal computer]

This paper describes a data processing system of monitors with a personal computer for a radioisotope laboratory. A monitoring system includes 6 area, 6 dust, and 3 gas monitors. Monitor signals through a multiplexer were fed to the personal computer which has analogue ports. Processed data were displayed on a color CRT, stored on a 5 inch mini floppy disk, and printed out as a report. We developed a data processing program with BASIC language. This system largely reduced manpower required to estimate radiation levels in the laboratory. The personal computer has sufficiently enough ability to construct a digital monitoring system for a small radioisotope laboratory.