A dynamic random access memory utilizing MOSFET transistors formed on a single semi-conductor chip is described. The random access memory utilizes 1,024 binary storage cells arrayed in rows and columns. Each row of cells has a read line and a write line. Each column of cells has one data line used for both read and write functions. Each cell is comprised of a write transistor and a pair of read transistors. The write transistor couples a capacitive storage node to the data line and is controlled...

An access door assembly comprising a frame with an inwardly extending flange, a removable access door and clamping devices that are adjustable and so adapted that they can be adjusted to attach the access door assembly to bar members already randomly provided within the ceiling or wall structure at variable distances from the opening whereby a flush and tight clamping engagement will be made of the access door assembly against the exterior surfaces of the ceiling or wall within the opening of wh...

Methods and apparatus are described which provide for granting access to a computer or other system to a plurality of users having different priorities. Each user is assigned to a priority group within which all users receive sequential access. Priority groups as a whole are granted access in accordance with their usage requirement and associated relative priorities. Each group is assured access for at least a minimum period within a longer reference period.

For use in a building to limit access to a secured area, an apparatus which includes a badge reader installed at the point of entrance, numbered badges for those desiring entrance into the secured area, a remote badge number file storage, an electronic scanner which scans the file when supplied with the number from the badge, and means for remotely electrically opening a door or other entrance to the secured area upon ascertaining authority for the badge holder to enter that particular secured a...

A digitally controlled magnetic tape system provides storage and retrieval of information in accordance with random accessing and affords branching within the program recorded on the tape. Both random accessing and branching operations are performed at high speed for either forward or reverse directions of tape drive to position the tape at a desired, specified address. The digital control also affords ancillary control functions for providing synchronized operation of external devices, such as ...

There is disclosed an easy-access pinning machine for pinning tickets to merchandise. The machine is sufficiently open to enable merchandise to be inserted into the machine to the desired depth. The machine has a die and an anvil or plunger between which one ticket at a time is fed by a ticket feeder mechanism. The ticket feeder mechanism, disposed in cantilevered relationship over a side access opening of a machine, is adjustable to feed different size tickets. A pin magazine and a mechanism fo...

A memory controller, in compliance with a memory access request from a central processor, selectively accesses a revolving memory surface. The memory controller supervises this access by expanding a memory position address specifying the memory access apparatus' relationship to the revolving memory surface, and then comparing the expanded position address with a requested address which designates a memory zone to which access is desired. A straightforward expansion of the memory position address...

There is disclosed herein an arrangement for recording a data bit and complementary data bit by utilizing the same bit current pulse. The rise time of the bit current pulse is utilized to record the data bit and the fall time of the pulse is used to record the complementary data bit.

A permanent access valve for use in sealed fluid systems to pierce a fluid line thereof without leaking fluid from the system or allowing contaminants to enter the system. The device includes a straddle nut having a tube embracing portion adapted to be soldered or brazed to the fluid line, and a valve body threadably engageable within the straddle nut. A piercing needle is rotatably supported within the body, and has a line-piercing portion which projects through an aperture in the nut and pierc...

The disclosure is concerned with large, heavy-duty, paperboard shipping cases of a type constructed from one-piece standard slotted blanks. The front closure flap and part of the front wall are slit, and creases are provided for folding portions of the front wall outwardly to form a V-shaped opening. Advantages include easy access into deep shipping cases, sealing the opening and top flaps with a single strip of tape, strength and simplicity of construction.