Dynamic Shift Registers - Bitsavers - Trailing-Edge

11151 ROM Code ConvertersM M 42 30 B O/M M 5230 B 0 hollerith to ASCII code convertergeneral descriptionThe MM4230BO/MM5230BO 2048-bit MOS read- used to compress the 12 Hollerith lines to eightonlymemory has been programmed to convert the line binary encoded form suitable for use by the12 line Hollerith punched card code to eight level read-only memory. This application is shownASCII. This conversion conforms to the American below.National Standard (ANSI x 3.26 - 1970). Three For electrical, environmental and mechanical de-TTL 4-input NAND gates, and three inverters are tails, refer to the MM4230/MM5230 data sheet.typical applicationconnection diagram.'U~C"EOCARDDATAINPUT."'DM14l0HPES OM.aurVPESMODEcornROL,4IN'UTIOAND~AHSARE' ..4.Jk'"... I InUlI'lITASCIH" , " " -[)o- '.~:-+ ..'r-,, ...MM!i231180Dual-In-Line Package,- Az- 2 nt-Nt" ~ ", 'r- "A,_ 1 nt-licB,- 4 211-"-4-p. " B,_ Ii 20t-~.. " 'r- '.B3- B 191'--'118.- 1 'I rA7ZONt['11 AJ 1•A.- IZ4t-- voo'r- "Is- I 11r-1I.1"" 'r- "B I_IItrVoo81 - 10 15 t- ~~::ROL" "PIINCHU ,1.- 11 14r~:~BlEivss_ ~1" "' " " "13rA.NOTUI.V .. =>U.IIVIII%,Voo.GNO.VGo--,Z.fVIII'!Z. n.Hol""'h, .."td'lIlli""'.'.lIIIhI21~ e 12/8 12/15 13/6 14/6 SO RS ACK 9/14 14/12 15/2 15/8 15/14 9-6-68-7 !CD ell , " 12/9 13/0 13/7 14/7 SI us 8EL SUB 14/13 15/3 15/9 15/15 9-8-7CD may be "I" Note: The entries of Form AlB refer to the unaS5lgned locations in the right hand side of the ASCII table (bit EB : 1)deSignated for specIalist use. (See National Bureau of Star>dards Technical Note No. 478.1®may be"'"Note: For the full ASCII-8 Code Table, see MM42300V/MM5230aV data sheet.201