|
Match
|
Document |
Document Title |
|
|
4264962 |
Small-sized electronic calculator
A small-sized electronic calculator, which comprises a power source in the form of a solar battery having a film of polycrystalline photoconductive material, such as selenium. The solar battery is...
|
|
|
4259594 |
Electrical power supply apparatus
Electrical power supply for use with apparatus which transmits a predetermined message. When an input signal is received, a source of electrical energy is connected to a power output terminal by...
|
|
|
4257003 |
Wide range frequency counter
This disclosure relates to a wide range frequency counter which functions as a highly accurate four range portable frequency counter. Accurate timing intervals of the frequency counter are obtained...
|
|
|
4240150 |
Portable timepiece calculator with power savings feature
A portable electronic device including a battery power supply, an oscillator for generating a time base signal, a timing pulse generator for generating timing pulses from said time base signal,...
|
|
|
4233667 |
Demand powered programmable logic array
This specification describes a programmable logic array (PLA) for performing logic functions on binary variables in a plurality of sequentially functioning arrays in which at least one of the...
|
|
|
4218876 |
Combined timekeeper and calculator with low power consumption features
A combined timekeeper and calculator implemented on an LSI semiconductor chip includes a generator stage for generating basic clock signals and system clock signals which are obtainable by...
|
|
|
4209735 |
Solar battery powered electronic calculator
A solar battery panel is installed on an electronic calculator through an arrangement formed on a rear casing of the electronic calculator or on a glass substrate supporting a display unit, a...
|
|
|
4189717 |
Synchronous control apparatus in multi-circuit system
A synchronous control apparatus in a multi-circuit system is provided with a first circuit which operates receiving a constant power supply and a second circuit which operates receiving a power...
|
|
|
4158230 |
Electronic calculator with no protruding key tops
The body of an electronic calculator comprising a keyboard, an arithmetic processor unit, a power supply and a digital display is accommodated within a casing at least a portion of which...
|
|
|
4157588 |
Miniature type electronic device
A miniature type electronic device having a calculating ability is disclosed. The device comprises an exterior operating member for changing over a calculation enable mode to a calculation disable...
|
|
|
4144580 |
Electronic apparatus incorporating a power savings feature
A power control system for electronic machines is capable of realizing substantial power savings. A logic circuit is activated by electric energy produced by a mechanical-electric power converter...
|
|
|
4109315 |
Wristwatch calculator with selectively scanned keyboard
A wristwatch calculator is provided with a keyboard for the entry of information into and control of operations of the apparatus. The keyboard comprises an array of switches connected in an X-Y...
|
|
|
4017725 |
Solar powered portable calculator
A portable calculator utilizing a solar panel array which can be either slidably moved within the calculator's housing or pivotly connected to it and which when exposed to incident light provide...
|
|
|
3962571 |
Low power digit blanking circuit
A greatly simplified calculator circuit implemented, for example, utilizing I 2 L technology is fabricated on a relatively small semiconductor chip resulting in high yield. The segment and digit...
|
|
|
3955355 |
Electronic calculator watch structures
There is disclosed an integral instrument providing timekeeping and display with calculator functions and display accomplished by means of a keyboard assembly mounted on the watch casing and...
|
|
|
3955185 |
Power supply for calculators
To avoid useless power consumption in electronic apparatus equipped with display units, for example, such as electronic desk-top calculators with light-emitting diodes, a pair of timer arrangements...
|
|
|
3946216 |
Electronic calculator system having serial transfer of instruction word fields to decode arrays
An electronic calculator system implemented in MOS/LSI semiconductor chips which contain data memory, an arithmetic unit, a read-only-memory for storing instruction words, and control circuitry for...
|
|
|
3941989 |
Reducing power consumption in calculators
Continuous power and a high rate clock are supplied to a calculator while it is in an execute mode and is actually decoding and processing input information, but lower duty cycle power and lower...
|
|
|
3928960 |
Combination wristwatch and calculator
Disclosed is a combination wristwatch and calculator utilizing a common electro-optical digital display. A time and calendar circuit is combined with a calculator circuit, both formed by large...
|
|
|
3922526 |
Driver means for lsi calculator to reduce power consumption
An MOS integrated circuit electronic calculator is clocked by a sequential tri-frequency signal generator actuable in response to the keyboard signals. The clock generator supplies a first...
|
|
|
3900722 |
Multi-chip calculator system having cycle and subcycle timing generators
An electronic protable calculator implemented in integrated circuit semiconductor technology utilizes cycle and subcycle timing generators on both the arithmetic chip and on the memory chip. One...
|
|
|
3855577 |
POWER SAVING CIRCUIT FOR CALCULATOR SYSTEM
Disclosed is a calculator system of the type implemented on semiconductor chips and featuring selectively de-energible decoders comprised preferably of programmable logic arrays of decoder circuits...
|
|
|
3755806 |
CALCULATOR DISPLAY CIRCUIT
A display circuit for use in an electronic calculator which includes a computing circuit for receiving and manipulating digital datum, the computing circuit including first means for repetitively...
|
|
|
3641328 |
KEYBOARD ENTRY MEANS AND POWER CONTROL MEANS FOR CALCULATOR
Internal control and subroutine logic transfers data between a keyboard input, a random access memory, and a plurality of flip-flop registers to perform arithmetic operations and transfers the...
|
|
|
3456601 |
DOORS FOR PIECES OF FURNITURE WITH COLLAPSIBLE TABLETOPS
|
|
|
3453601 |
TWO SPEED ARITHMETIC CALCULATOR
|