. The Bell System technical journal . C (space). Fig. 2—Chart of TWX keyboard. It will be noted that this keyboard is similar to the ordinary type-writer keyboard except that there are only three rows of keys insteadof four as in the typewriter. In the typewriter keyboard, the lowerthree rows of keys are used ordinarily for small letters but when a shift 622 BELL SYSTEM TECHNICAL JOURNAL key is also operated they type the corresponding capital letters. Thefourth or top row of keys carries the numerals and certain punctuationmarks. The teletypewriter types capital letters but not small letterss
. The Bell System technical journal . C (space). Fig. 2—Chart of TWX keyboard. It will be noted that this keyboard is similar to the ordinary type-writer keyboard except that there are only three rows of keys insteadof four as in the typewriter. In the typewriter keyboard, the lowerthree rows of keys are used ordinarily for small letters but when a shift 622 BELL SYSTEM TECHNICAL JOURNAL key is also operated they type the corresponding capital letters. Thefourth or top row of keys carries the numerals and certain punctuationmarks. The teletypewriter types capital letters but not small lettersso that by using a shift or Figures key the upper case position of theletter keys is available for the usual punctuation marks and only three rows of keys are required on the teletypewriter key-board. The operation of the Figures key sends a signal causing thereceiving machine to shift to upper case so that numerals and punctua-tion marks will be printed until a Letters or Space signal is sent whichrestores the machine to lower c
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Keywords: ., bookcentury1900, bookdecade1920, booksubjecttechnology, bookyear1
