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3-OF-9 Bar Code
Storekeeper 3 & 2 - Manual for watching over inventory and other things needed in a store
Shipboard Uniform Automated Data Processing System
Figure 11-3.—Example of a 3-of-9 bar code arrangements. spaces when a given number of bars are read and vice versa. If the scanner reads an incorrect number of bars for the number of spaces read (or vice versa) or if the read  data  element  is  not  begun  and  ended  with  a start/stop  mark,  then  a  “no-read”  condition  exists.  With a good quality marking, the first read rate is near 100% and the character substitution (misread) rate is less than 1 error per 6,000,000 characters read. However, less than desired printing quality or label condition will degrade   the   first   read   rate,   while   the   character substitution rate will be affected only slightly. Our computers today depend on us to manually input data into a device that converts information into a machine   acceptable   form-punched   cads,   magnetic tapes,  or  electric  signals  from  a  terminal.  As  we  have all experienced, manual input is prone to error and speed is  limited  to  a  person’s  manual  dexterity.  Bar  code  data can  be  scanned  and  converted  accurately  into  computer usable form without manual keying. BAR  CODE  APPLICATIONS From the moment material first enters the supply system until it is issued, these bar codes can be scanned to provide key data for a variety of applications such as Location   Survey —Presently,   the   Uniform Automatic Data Processing System-Stock Point system (UADPS-SP) produces a tape with the location to be surveyed and each stock number that is supposed to be in that location. his tape is converted to cards. The warehouseman uses these cads to go to the location, check  material  in  the  bin,  and  handwrite  corrections  on the cards. The cads are returned for keypunching. The punched  cards  are  then  converted  to  tape  which  is  used to update the Master Stock Item Record (MSIR). With the locations labeled with their number in bar code and a portable scanner, cards are eliminated The scanner   would   be   loaded   with   images   from   the UADPS-SP tape. The warehouseman is prompted by the   scanner   to   go   to   a   particular   location.   The warehouseman confirms he is at the right place by scanning the location bar code label. The scanner then displays what stock number should be in the bin, its condition  code,  shelf-life,  etc.  The  warehouseman validates this information, makes corrections on the scanner’s keyboard, and inputs any stock number in the location which is not shown on the scanner. These scanners have up to 60,000 character memories so the warehouseman  can  survey  a  number  of  locations. When   the   warehouseman   is   done,   the   scanner’s information is converted into a tape which updates the MSIR. Physical   Inventory—To   conduct   a   physical inventory, portable scanners are used in a way similar to  a  location  survey.  The  locations  and  items  to  be inventoried  are  loaded  into  the  scanner,  the  items inventoried, and the scanner’s data passed to the main computer. As more and more incoming material is bar coded,  the  warehouseman  will  be  able  to  scan  the  bar code label with the stock number on the item’s box rather than write it down or key it into a scanner. Material  Receiving—Scanning  light  pens  attached to a video terminal will be used to obtain the stock number and contract number off the incoming outer container. With these two pieces of data, the computer system will retrieve other pertinent information about a receipt  from  the  Due-In  File.  The  receiving  personnel can input quantity received and be told where this item should be stored. The capability to print a barcode label for those items received without labels will also available. AUTOMATIC  DATA  PROCESSING One  of  the  most  significant  characteristics be o f automatic data processing (ADP) is that a complete series  of  operations  can  be  planned  The  machine  can then  be  directed  to  carry  them  out  without  further human  intervention. An   ADP   installation   which   includes   several individual equipments is usually called a SYSTEM. The   system   must   be   able   to   accomplish   four fundamental   functions. Accept  data Accept  instructions 11-3

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