Abstract: In a digital watch, frequency adjusting can be achieved by selectively deleting pulses at a specified location in the divider chain in order to obtain the desired timekeeping accuracy. When a digital watch's recessed (setting) push button is sequentially depressed, the watch's display advances through the month, date, hours and minutes/seconds setting modes. If the recessed push button is depressed again, the watch will be in the coarse frequency adjust mode and the letters "CFA" are shown on the watch display for approximately one second, the display is blanked for 0.5 second, and then the watch shows a three digit frequency correction number with the first two digits flashing. By holding down a main operating push button, the flashing number increments at a one Hertz rate until the desired coarse frequency correction number is shown on the watch display.

Abstract: A timing circuit in a digital watch with a two digit display. When the circuit is activated by a push button, the two display elements first display the hours information, for as long as the push button is depressed, and after release of the push button, the display elements show minutes for about one-half second before turning off.

Abstract: A digital wristwatch with dual displays, one a liquid crystal display (LCD) for use in daylight or bright light and the other a light emitting diode (LED) display for use in dim light, is provided with three controlling push buttons (LED, Date and Set) for five display conditions and four setting conditions. With no button pressed, hours and minutes are displayed by the LCD elements. The LED button alone causes the LED elements to also display the hours and minutes for at least 1.5 seconds and the Date button alone causes the date to appear by the LCD, and if the Date push button is held over about 1.5 seconds the date will also appear on the LED display. The LED and Date buttons pressed together will cause the LCD elements to display the seconds, even after they have been released for "hands off" seconds display until either push button is again momentarily pressed.

Abstract: A battery select circuit and level translator in a digital watch; the battery select circuit uses the voltage from a single battery to power a digital watch's oscillator and high frequency dividers and uses the voltage from two batteries when the watch user desires the watch's horological information to be displayed on the display devices. Also, when only the voltage of a single battery is required, i.e., to power the digital watch's oscillator and high frequency dividers, the power switch causes the voltage from a first battery to be used during the 12 hour A. M. period and then switches to use the voltage from a second battery during the 12 hour P. M. period; thereby causing both batteries to wear out at the same rate.The level translator which includes level shifters shifts or extends the voltage from the oscillator and high frequency dividers to a higher voltage level to clock the low frequency watch logic.

Abstract: An insulating bushing in a high voltage system which electrically separates a conductor from a wall through which it passes. Attachment of the bushing to the wall is accomplished by applying metalization to a recess in the bushing body and then by applying solder between the metalization and the wall. The metalization stops short of the sharp corners of the recess so that the solder is also kept away from these sharp corners thereby eliminating sharp corona producing corners or edges.

Abstract: Diodes having a fast response time are used in an Emitter-Coupled Logic (ECL) current switch circuit to cause the injection of an idle current in each of the transistors of said switch. The injection of the idle current through these transistors causes them to operate at all times in an active region. When the transistors remain in the active operating region and are subjected to a switching transient, the parasitic capacitance associated with emitter base and collector base junctions are not charged and discharged to the same extent that they would be if the transistor was turned off completely. Moreover, if the transistors are held on, delay required for minority profile "buildup" in the base region is reduced and the current switch's propagation delay is reduced.

Abstract: A digital launch sequence timing network in a single rail launcher which interprets signals from the aircraft and generates the signals necessary to automatically prepare and launch a missile. In order to launch the missile, a number of signals must be sent from the launcher to the missile in a particular time sequence. The launcher must first send an activate pulse to the missile battery which lasts for a predetermined amount of time, until the missile battery reaches its operational condition. Next, the launcher delivers a pulse to activate the missile rocket motor to provide the propulsion needed by the missile when it leaves the launcher. The preparation steps needed to prepare and launch the missile must take place in an exact time sequence which is provided by the digital timing network, composed of several shift registers. The single rail launcher is used for carrying and launching the maverick missile.