Claims
- 1. In a tape reader for sensing data from a program on an elongated tape, said tape having a plurality of parallel tracks with one of said tracks having sprocket holes for advancing the tape, the tape including a plurality of data bits each bit being defined as the information contained in all the tracks in a transverse portion of the tape which includes only one sprocket hole, the improvement comprising:
- a selectively operable stepping switch for coupling power to a drive sprocket for rotating the drive sprocket incrementally to advance the tape to the next sprocket hole;
- enabling switch means operable in response to the presence of a sprocket hole and the absence of any other data in said data bit for actuating said stepping switch.
- 2. The invention as defined in claim 1 and further including a second enabling switch responsive to the presence of other data in said data bit for activating said stepping switch after the instruction contained in said data has been carried out.
Parent Case Info
This is a division of application Ser. No. 477,753, filed June 10, 1974 now U.S. Pat. No. 3,915,040.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
2667535 |
Slayton |
Jan 1954 |
|
2987249 |
Van Vechten |
Jun 1961 |
|
3291994 |
Romeo et al. |
Dec 1966 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
477753 |
Jun 1974 |
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