IEEE
You are not logged in, please sign in to edit > Log in / create account  

Thread:STARS talk:Early Punched Card Equipment, 1880 - 1951/comments on article/reply

From GHN

(Difference between revisions)
Jump to: navigation, search
m
m
 
Line 1: Line 1:
=== another comment
+
Railroad use of Hollerith's equipment is described in Pugh "Building IBM" pp.14-15 and varies somewhat from the referenced New York Central card.
 
+
This text "Unlike cards used for census work, in which punched-hole locations represented personal characteristics such as age or marital status, the new cards were entirely numeric; a single digit could be recorded in each column by a hole in one of ten positions." seems to confuse the new card layout with the data recorded. 
+
 
+
The new card layout has a numeric description of each punched location, column number and row number, but that does not mean "the new cards were entirely numeric". Just like cards used for census work punched-hole locations can represent personal characteristics such as age or marital status -- or anything else!  For example, represented in one column of the new card could be (row number followed by the represented personal characteristics): 1 female single, 2 female married, 3 male single, 4 male married, 5 female child, 6 male child.  All personal characteristics, no digits.
+
 
+
Rw
+

Latest revision as of 05:20, 11 April 2013

Railroad use of Hollerith's equipment is described in Pugh "Building IBM" pp.14-15 and varies somewhat from the referenced New York Central card.