An electrochromic display device comprises a pair of first and second, opposed insulative substrates, a layer of electrochromic substance sandwiched between the substrates, a transparent display electrode on the first substrate, and a counter electrode on the second substrate. A dielectric layer analogous in pattern to the display electrode is formed on the counter electrode to improve the device's life time and eliminate interference between adjacent display electrodes.

In an integrated circuit for arithmetic operation and display control connected to a power source (46) and a liquid crystal display device (45), and energized by the power source, including an arithmetic operation circuit (42) for performing a designated artithmetic operation, wherein the result of the arithmetic operation is displayed by the display device, a boosting circuit (43) receives and boosts the voltage from the power source (46), a drive circuit (44) is powered by the boosting circuit...

A digital display system of the dynamic pulse-lighting type for electronic desk-top calculators and the like, characterized in that a blanking signal having a pulse width large enough to cover each border time between adjacent display timing signals is used to shut off the power supply to the display devices for each pulse duration to suppress any flicker of the display unit which might otherwise result from non-synchronism or overlapping of the display signals.

In a keyboard entry word processing system, text is stored in a recirculating refresh memory along with a carriage return code at the end of each line. The text is displayed on a CRT screen. A cursor symbol, also displayed on the screen, may be moved by keyboard control to designate a particular character position on the screen where editing is to occur. When the cursor is within the field of displayed text, characters may be edited at the location in memory corresponding to the location of the ...

A storage element for a digital permanent storage system having a field effect transistor, the semiconductor layer of the field effect transistor being changeable in its electrical conductivity in dependence on the state of the storage of a storage medium. The storage medium consists of an electret foil, a field effect transistor which is located on one side of the electret foil and which has been applied directly using the thin-film technique, and a glow gap on the opposite side of the electret...

A digital circuit has a memory circuit and a logical circuit connected in cascade between first and second delay circuits. The first delay circuit controls an input signal to the digital circuit, so that the delay of the input signal due to a stage or stages preceding to the digital circuit may fall within a delay by the first delay circuit, and the second delay circuit controls an output signal from the digital circuit, so that delays due to the memory and logical circuits may fall within a del...

The display panel includes a base plate which carries a plurality of pairs of scanning cathodes and display cathodes, oriented in columns, and insulating spacers which, in each pair, separate the scanning and display cathodes into operative pairs, with the pairs being arrayed in rows and columns. The panel also includes a face plate which carries a plurality of anode strips, oriented in rows, each strip overlaying and having a portion in operative relation with a row of scanning and display cath...

An aural-visual display system especially suitable for visually displaying a number of items, such as products, and playing a recorded message relating to a displayed item in response to actuation of a selector corresponding to the item. One of a number of different messages on a magnetic tape are selectively played by changing the positional relationship between a magnetic pickup and the message location on the tape, in response to operation of a selector. This concurrently produces a visual di...

A character display apparatus for displaying a character pattern on a display panel includes circuitry for providing a viewing frame of rectangular shape to point out a data input area.

A bipolar sense-write circuit is provided for sensing voltage levels representative of a logical "1" or "0" stored in a flip-flop storage cell and for writing voltage levels into the flip-flop storage cell. The sense-write circuit includes first and second amplifier stages which, when coupled to a selected flip-flop storage cell produce a voltage in the amplifier section approximately equal to the voltage on a collector node in the flip-flop storage cell. Each amplifier stage of the sense-write ...