EPROM

ROM, PROM, EPROM is Read Only Memory, Programmable Read Only Memory and Erasable Programmable Read Only Memory and are used for rapid sourees of information that seldom, or never need to be modified. 

The practices contained in this section apply to all standard instruments, microcontrollers, and smart instrumentation (e g., weigh scales, bar code scanners, controllers, vision systems and EPROM s) considered part of a computer system. This equipment is driven by programmable firmware. 

Figure 6.170(b) Central module (CPU), to be clipped on a 35mm standard rail. With a microprocessor, RAM and EPROM/OTP, it coordinates, controls and monitors all the functions of a station. 

The correct versions of software must be installed and appropriate backup copies made. The correct versions of firmware must also be ehecked for their presence. This may include a physical inspection of an Electronically Programmable Read Only Memory (EPROM) to read its label. The... 

EPROM Electronic Programmable Read Only Memory... 

The windows in EPROM chips are used during the erasure process. When you open a computer case, make sure they are covered with a small piece of opaque material (part of a self-adhesive mailing label works well) to prevent light (either sunlight or light from fluorescent lamps) from inadvertently erasing these chips. 

A, B, E, F. Since ROM stands for read-only memory and PROM stands for programmable ROM, they automatically are incorrect answers for the question. RAM and SRAM are both monikers of short-term memory (RAM), and therefore have to be erasable to be of any use. EPROM and EEPROMs are both special types of PROMs that are Erasable Programmable (EPROM) and Electronically Erasable and Programmable (EEPROM) and therefore have the ability to be erasable and re-usable. 

B. EPROM (Erasable Programmable ROM) is erased and reprogrammed with special ultraviolet light shone through a small window in the top of the chip. This gives this type of chip quite an advantage over PROMs. 

D. EEPROM (Electronically Erasable PROM) is even more sophisticated than EPROM in that it can be erased and reprogrammed using software tools. This makes it an exceptional choice for BIOS chips. Software upgrade utilities are much easier to implement (and have less chance of error) than replacing an entire chip. 

Most modern computers store their BIOS on an EPROM (Erasable Programmable Read Only Memory). An EPROM can be updated using flash software. In many ways, this method is more dangerous than the old-fashioned method of replacing a chip. Since the flash software overwrites the information on the chip, if you make a mistake, your computer can become unbootable. You will want to follow the instructions very carefully ... 

Most of today s BIOSs are written to a Flash EPROM and can be updated through the use of software. Each manufacturer has its own method for accomplishing this. Check out the documentation for complete details. 

EPROM Acronym for erasable programmable read-only memory. A memory chip that maintains its contents without electrical power, and whose contents can be erased and reprogrammed by removing a protective cover and exposing the chip to ultraviolet light. 

Ellwanger et al.244 showed by using double poly-Si EPROM structures that in terms of gate oxide performance, low fluorine SiH2Cl2-WSix (- 1017 at/cc F) only marginally increased gate oxide thickness whereas SiH4-WSix ( 1020 at/cc F) increased the thickness by about 20A. 

The microcomputer system chosen is based on the Pro-Log 8821 processor card which uses the Intel 8080A microprocessor. In addition, this card contains lk bytes of RAM memory and sockets for up to 4k bytes of EPROM memory containing the programs used in data collection and communication. The system also contains 32k bytes of RAM memory for data storage. Analog to digital... 

FX2 (C67C68013), which integrates the USB 2.0 transceiver, serial interface engine (SIE), enhanced 8051 microcontroller, and a programmable peripheral interface into a single chip. This is a very cost-effective solution that shortens development time and provides a small foot print for use in a mobile platform. Although not important in this application, the FX2 can be operated at the maximum USB 2.0 data rate of 45 Mbytes/s. The 8051 microcontroller nms software that can be downloaded to an internal RAM via the USB or from an EPROM (Atmel 240164). Additionally, the 8051 microcontroller has three high speed coimter/timers, which provide data acquisition and control of various components as discussed below. 

EPROM (storing electrical charge on floating MOS gates). 

The amplifier (5) boosts the signal, eliminates temperature coefficients, and adjusts the offset. The low pass filter (6) limits the bandwidth. The drive circuit is a closed loop system to achieve a stable drive oscillation. It consists of a structure (not drawn) that detects the oscillation movement of the drive of the yaw-rate sensor element, a control unit (2), and an actuator (not drawn). The start circuit (9) initiates the drive oscillation at power on. The block (8) generates all necessary adjustment signals and includes the logic circuit for the trim and an EPROM (erasable programmable read-only memory) for the storage of the trim data. 

EPROM erasable programmable read-only memory... 

Fig. 11.17 (a) Scheme of the instrumentation used for in vivo electrochemical experiments, (b) Potentiostatic circuit and microprocessor interface (the electronic components are shown for one of the electrodes only) SDK-85, Intel microcomputer system 7520, D/A converter Ai and As, 741 analogue devices A2 and A4, Burr Brown 3510 As, Burr Brown 3527 VFC-32K, Burr Brown V/F converter 2716, Intel EPROM 8253-5, Intel counter DAC-08, PHI D/A converter R = 1 mfi, 1. (Reproduced from [81] with permission of the American Chemical Society). 

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