Matches 251 - 300 out of 368 < 1 2 3 4 5 6 7 8 >
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5237531 Read-only memory having a security circuit preventing unauthorized memory retrieval  
A read-only memory provides a security circuit capable of nullifying data being output from the read-only memory itself, a memory cell array consisting of memory cells arranged in matrix, an input...
5235551 Memory addressing scheme  
A method for increasing the addressable memory space of an addressed line limited computer system. In the present invention, at least two memory planes, plane zero and plane one, are provided. Each...
5191325 Programmable relay control device  
A programmable relay control device is provided for determining the level of at least two outputs as a function of signals present at the inputs and timing signals from a clock, comprising...
5191550 Dual antifuse memory device  
A semiconductor memory device employing a plurality of antifuse memory elements is disclosed. The memory elements have selected connection portions of two or more elements formed as a unit and are...
5151876 Read-only memory having data register for holding output data  
A data register is provided through a column gate circuit in a ROM array in which font information is stored. Desired font information is read out as parallel data through the column gate circuit...
5127097 Memory writing apparatus  
A memory writing apparatus for simultaneously writing the same data in a plurality of memories such as PROMs, the apparatus having a master function portion and slave function portions connected to...
5124948 Mask ROM with spare memory cells  
A main memory cell array is divided into a plurality of blocks, and a spare memory cell group is arranged apart from the main memory cell array. The spare memory cell group uses bit lines or word...
5020025 Capacitively coupled read-only memory  
A read-only memory for storing a plurality of bits of information. The read-only memory includes a plurality of memory cells arranged in an array with each memory cell including a capacitor having...
4990489 Read only memory device including a superconductive electrode  
A read only memory device includes a first electrode and a second electrode arranged in an overlapping relation with the first electrode so as to be geometrically in connection at an intersection...
4975876 Method for arranging a read-only memory for reading out updating status information in an integrated circuit  
The present invention relates to a method for arranging a read memory for reading electrically updating status information from an integrated circuit (3) which comprises various circuit layers....
4965768 Semiconductor device having programmable read only memory cells for specific mode  
A semiconductor device having an internal circuit comprising a program circuit for programming a PROM, a discrimination circuit for discriminating the contents of the PROM, and a specific mode...
4943786 Digital control of phase locked loops  
A control circuit, particularly for use in a phase-locked loop includes a read-only memory (ROM) having n address inputs divided into two groups, each group being addressed by first (A) and second...
4905191 Microcomputer with built-in EPROM and test mode  
A single-chip microcomputer comprising a microprocessor which executes information processing in accordance with a predetermined program, and an EPROM which stores the program therein, the EPROM...
4897813 Partially programmable read-only memory system  
A non-reprogrammable ROM holding microinstruction words cooperates with a Content Addressable Memory made of a TAG Memory and Data Memory. Portions of the locations in the TAG Memory have the same...
4882611 Double layer voltage-programmable device and method of manufacturing same  
A voltage-programmable device in which the programming voltage V p and the "off" resistance R i are separately controlled. The device includes a body of semiconductor material having a doped...
4864535 Entry point address circuit for microcode rom  
A multiplexer (76) for coupling selected instruction word bits to a microcode memory (22) as entry point addresses. The multiplexer (76) receives sixteen bits from an instruction word register (10)...
4852058 Semiconductor memory circuit having inspection circuit  
A semiconductor memory circuit includes a plurality of programmable memory cells capable of being programmed by a predetermined current; a plurality of bit lines connected with memory cells, a...
4845679 Diode-FET logic circuitry  
Exclusive diode-FET logic circuitry capable of providing functional programmable logic array output logic signals within one-gate delay from an initial input logic signal, and functional read-only...
4829478 ROM amplifier device  
A semiconductor integrated circuit device including a signal line connected at one point thereof to a source of a signal voltage variable between high and low levels and a source of an activating...
4802126 Semiconductor memory device  
For preventing a semiconductor substrate from undesirable discharging of electric charges, there is disclosed a semiconductor memory device fabricated on the semiconductor substrate and having a...
4785425 Electronic locking system  
A field programmable electronic locking system includes a processor and an electrically erasable programmable read-only memory (EEPROM). The processor has address outputs electrically connected to...
4783763 Field-programmable device with buffer between programmable circuit  
A field-programmable device contains a buffer (20) located between a pair of programmable circuits (14 and 16) along a column (10) connecting the circuits. The buffer provides increased current to...
4783737 PROM writer adapted to accept new writing algorithm  
A PROM writer capable of writing data in a PROM by a writing algorithm other than that stored in the memory thereof without requiring the change of the system program. The PROM writer comprises a...
4779229 Prom with programmable output structures  
An imporoved, integrated circuit memory device is disclosed. Programmable read only memory (PROM) is combined with a programmable output circuit. The output circuiry can be programmed individually...
4758985 Microprocessor oriented configurable logic element  
A microprocessor controlled configurable logic circuit achieves versatility by including a configurable combinational logic element, a configurable storage circuit, a configurable status buffer,...
4740919 Electrically programmable logic array  
An electrically programmable logic array (10) for binary signals having signal inputs A 0 -A x ) and signal outputs Q 0 -Q i ) comprises two row lines (a 0 ,a 0 ' -a x , a x ') for each signal...
4736342 Method of forming a field plate in a high voltage array  
An array of electrically programmable semiconductor memory cells of a type having electrically conducting odd and even row lines, left and right column and ground lines and field oxide regions...
4734886 Auxiliary word line driver for effectively controlling programmability of fusible links  
The problem of the distributed voltage drop along a resistive word line through which fusible elements of a circuit array are selectively programmed to a state of high resistance (effective open...
4734885 Programming arrangement for programmable devices  
A programmable matrix has improved programming circuitry which allows the matrix to be programmed without raising the output terminals or power supply to higher than normal voltage levels. The...
4707806 Semiconductor integrated circuit device having fuse-type information storing circuit  
A device connected between first and second voltage feed lines includes an information storing circuit having a fuse for storing information by blowing or not blowing the fuse, a voltage level...
4706216 Configurable logic element  
A configurable logic circuit achieves versatility by including a configurable combinational logic element, a configurable storage circuit, and a configurable output select logic. The input signals...
4692713 Read only memory control circuit for use in a phase lock loop  
A control circuit comprising a read-only memory has its storage area divided into two areas each containing the same number of addressasble words. By arranging that input of a single address signal...
4660172 Storage medium for electronic data processing  
A storage medium is disclosed which includes a plate having a plurality of taps arranged near the peripheral edges and on each surface thereof. Each tap is connected to a storage element. The taps...
4638466 Programmable semiconductor memory device having separate read word line drivers and write-only word line drivers  
A programmable semiconductor memory device provided with a read word line driver and a write-only word line driver. The write-only word line driver is disconnected from the lines after a write...
4609985 Microcomputer with severable ROM  
A microcomputer has provision for both on-chip ROM (on the same chip as the CPU) and off-chip ROM and which may operate with only on-chip ROM as only off-chip ROM has the hardware capability to...
4609998 High conductance circuit for programmable integrated circuit  
A unique programming circuit, suitable for use with programmable read-only memories (PROM), or other circuits utilizing programmable fuses, is provided which overcomes several distinct...
4590589 Electrically programmable read only memory  
A programmable read only memory (PROM) includes voltage programmable structures which are readily fabricated to provide predictable and selectable programming voltages. The resistor structure...
4583168 Read only memory and decode circuit  
A microprocessor integrated circuit (50) has a read only memory (ROM) (400) which is X and Y addressible and is word, bit and page oriented. The microprocessor integrated circuit (50) has a main...
4578751 System for simultaneously programming a number of EPROMs  
A method and system are used for simultaneously programming a group of erasable programmable read only memories (EPROMs) (11) originally set in the "all-ones" state, by routing (17-49) programmed...
4575743 Double layer ROM integrated circuit  
A first ROM is comprised of a transistor matrix. The polycrystalline silicon forming the gates of the transistors of the first ROM and another polycrystalline silicon region are arranged in a...
4569120 Method of fabricating a programmable read-only memory cell incorporating an antifuse utilizing ion implantation  
In fabricating a PROM cell, an electrical isolation mechanism (44 and 32) is formed in a semiconductive body to separate islands of an upper zone (36) of first type conductivity (N) in the body. A...
4569121 Method of fabricating a programmable read-only memory cell incorporating an antifuse utilizing deposition of amorphous semiconductor layer  
In fabricating a PROM cell, an electrical isolation mechanism (44 and 32) is formed in a semiconductive body to separate islands of an upper zone (36) of first type conductivity (N) in the body. A...
4546456 Read-only memory construction and related method  
A read-only memory circuit having, for a given memory access time, a power requirement of approximately one half of the power requirement needed to allow for a worst-case condition in which all bit...
4534014 Mechanically programmable read only memory  
A mechanically programmable read only memory in the form of a card for use with a reading circuit to which the card is applied, an insulating substrate with a multiplicity of resistive coating...
4494218 Read only memory using series connected depletion transistors as bus lines  
The memory circuit is formed by depositing spaced, parallel polysilicon strips on an insulating layer on the surface of the substrate. Spaced, parallel, elongated regions, which extend in a...
4472726 Two carrier dual injector apparatus  
A two carrier dual injector semiconductor apparatus utilizing a pair of injector gates for simultaneously injecting holes and electrons into a series stack of insulator layers. The stacked...
4451903 Method and device for encoding product and programming information in semiconductors  
A method and system for encoding key product information in semiconductors is disclosed. The invention is particularly useful in connection with byte-wide memories, but also finds application in a...
4446475 Means and method for disabling access to a memory  
An integrated circuit chip having a digital memory is provided wherein direct access to at least a portion of the memory is prevented. Contact pads having coupling lines to couple the contact pads...
4442508 Storage cells for use in two conductor data column storage logic arrays  
A clocked storage logic array is formed from a plurality of columns and a plurality of rows disposed orthogonal to the columns. Logic cells interconnect selected columns and rows. Storage cells are...
4441164 Electronic teleprinting apparatus including a removable programmed EPROM  
A data processing apparatus is provided with a keyboard and a programmable read-only memory, for example of EPROM type, for durably preserving data which define the manner of operation of the...
Matches 251 - 300 out of 368 < 1 2 3 4 5 6 7 8 >