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2. Friden Flexowriter - Wikipedia

   en.wikipedia.org/wiki/Friden_Flexowriter

   Friden Flexowriter used as a console typewriter for the LGP-30 computer on display at the Computer History Museum Model 1 SPD (Systems Programatic Double-case) equipped for edge-punched cards; most Flexowriters had paper-tape readers and punches. The Friden Flexowriter was a teleprinter produced by the Friden Calculating Machine Company.

3. Punched tape - Wikipedia

   en.wikipedia.org/wiki/Punched_tape

   The tape punch, rather than punching out the usual round holes, would instead punch little U-shaped cuts in the paper, so that no chad would be produced; the "hole" was still filled with a little paper trap-door. By not fully punching out the hole, the printing on the paper remained intact and legible.

4. Hole punch - Wikipedia

   en.wikipedia.org/wiki/Hole_punch

   Three different international-standard two-hole punches. A hole punch, also known as hole puncher, or paper puncher, is an office tool that is used to create holes in sheets of paper, often for the purpose of collecting the sheets in a binder or folder (such collected sheets are called loose leaves).

5. Teletype Model 33 - Wikipedia

   en.wikipedia.org/wiki/Teletype_Model_33

   The Model 33 was produced in three versions: [3] Model 33 ASR (Automatic Send and Receive), which has a built-in eight-hole punched tape reader and tape punch; Model 33 KSR (Keyboard Send and Receive), which lacks the paper tape reader and punch; Model 33 RO (Receive Only) which has neither a keyboard nor a reader/punch.

6. Computer programming in the punched card era - Wikipedia

   en.wikipedia.org/wiki/Computer_programming_in...

   A single program deck, with individual subroutines marked. The markings show the effects of editing, as cards are replaced or reordered. Many early programming languages, including FORTRAN, COBOL and the various IBM assembler languages, used only the first 72 columns of a card – a tradition that traces back to the IBM 711 card reader used on the IBM 704/709/7090/7094 series (especially the ...

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