Dynamic Shift Registers - Bitsavers - Trailing-Edge

ROM Character GeneratorsMM4240ABU/MM5240ABU hollerith character generatorgeneral descriptionThe MM4240ABU/MM5240ABU is a 64 x 8 x 5read-only memory programmed to display a 64-character subset of the Hollerith 12-line code,normally used in punching 80 column cards_ Compressionfrom 12 lines to the six needed to makeup a 64-character set may be accomplished asshown in the typical application_For electrical, environmental and mechanical details,refer to the MM4240/MM 5240 data sheet.typical applicationow1211gI-- A.B,vee -SERIALDATATHOLLERITHCODE0---0->-.d)-..N>-LINEANDPAGESTOREISH AN40lI-- A.I-- A,I-- A,I-- A,I-- A,MM424QABU/MM5240ABUB,B,l, l, l,I I IL---B..-------B •IA ~ 6.8K;-~DMB590-12V Vee C]CKLINECOUNTER12 A~. A411 Aso A.9 A3 " AoB A,No,oHolep'.,enIQ",",elosureloGNO·For ad'hllonal appllCiitlOn Information on mcorilllratmg th,s device in it display system, see AN40"A Systems Approach til Character Generators"175