50 Ultrastrips per cartridge computer controlled MDS Readers 128 MDS readers per minicomputer for Directory Assistance 411
Microform Data Systems Ultrastrip. 2000 images per strip. MDS UCR microfilms 35mm microfilm an additional 10X reduction = 300X to 600X reduction images. Image size about a square period in size‌ MDS reader shows full size no image loss from original size image... find any random image in less than 2 seconds.