Electronics Engineering

pls can someone help me with a code or giudeline on this project am currently working on.

my project is on reading data from a microcontroller (89s52) via serialport to Eight textboxes on a PC GUI using C#,am using Visual studio 2008.Am having problems on how to display the ASCII characters e.g(55,23,12,34,42,33,22,23,N 55,23,12,34,42,33,22,23,N,55,etc),also be able to store the read data into an access database using C#.

The signals are:

TXD - Transmitted Data

RXD - Received Data

RTS - Request To Send

CTS - Clear To Send

DSR - Data Set Ready

DCD - Data Carrier Detect

SDCD - Secondary received line signal detect

SCTS - Secondary Clear To Send

STD - Secondary Transmitted Data

TC - Transmitter Clock

SRD - Secondary Received Data

RC - Receiver Clock

SRTS - Secondary Request To Send

DTR - Data Terminal Ready

SQ - Signal Quality

RI - Ring Indicator

ETC - External Transmitter Clock

There are also connections for:

FG - Frame protective Ground

SG - Signal Ground

Depending upon application most signals are not used; many just use TXD, RXD and SG.

For use with a modem the lines used could be: RI, DTR, DCD, DSR, RTS, CTS, TXD, RXD, SG.

A: Rising heat from the ground distorts the vision as appear as quivering the same can be observed on a empty road.

150 feet

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AS FREQUENCY INCREASE THE BANDWIDTH INCREASE. AS WE KNOW NOISE HAVE LARGER BANDWIDTH. SO ITS AFFECT HIGH FREQUENCY SIGNAL. BUT LOW FREQUENCY SIGNAL HAVE LOW BANDWIDTH SO IT IS LESS AFFECTED BY NOISE.

ALSO WE KNOW QUALITY FACTOR= CUTOFF FREQUENCY / BANDWIDTH.

SO AS FREQUENCY INCREASE B.W. INCREASE SO QUALITY DEGRADE.

CUTOFF FREQUNCY AND THE TERM FREQUENCY (USED HERE) IS DIFFERENT.

CUTTOFF FREQUNCY IS USED IN FILTER.

PRABIR KUMAR SETHY

prabirsethy.05@gmail.com

Connect the 3 selection pins on both multiplexers in parallel to the A, B, and Carry inputs.

Use the output of one multiplexer as the Sum output and connect its 8 inputs according to the truth table for the Sum function.

Use the output of the other multiplexer as the Carry output and connect its 8 inputs according to the truth table for the Carry function.

Connect any enables, etc. on both multiplexers so that they are always enabled and passing signal.

LOCAL ACCESS NETWORK. meaning as opposed to Internet whereby every body can be connected.

With a mobile originated call firstly it sends out a connection request then there is a security check, then the resources are checked i.e. money etc, then the call is set up.

The output of a current transformer is AC. Current transducers have added built-in circuitry to convert the AC current into a standard process output. It is DC, although it may be current or voltage. Some standard transducer output ranges are: * 0-10 VDC * 0-5 VDC * 0-1 VDC * 2-10 VDC * 1-5 VDC * 4-20 MADC Some transducers have selectable outputs via programming, switch or jumper settings, others have only one of the above outputs, and must be ordered with the one you need. Check the manufacturer's literature.

Application of Pn junction diode is a very vast topic itself. It is used in almost every electronic circuits.diodes are used to build half wave and full wave rectifiers.they are used to convet AC to DC.

a bowl of cereal

Composition of ram: There are many transistors layed for addressing (accessing specific modules) then there are a series of transistors coupled to a capasitor. That allows for one bit of data to be stored.

FEEDBACK CIRCUITS.

In addition to parallel and series circuits, there are also closed and short circuits.

EDA

1)Synopsys

2)Cadence Design Systems

3)Mentor Graphics

4)Xylinks

5)Nsys

Manufacturing

1)Intel

2)ST Microelectronics

3)Texas Instruments

4)Freescale

5)AMD

Comunication

1)Alcatel lucent

2)Nokia Seimens

Networking

1)CISCO

The period of a 15MHz sine wave is 1 / 15MHz, or 0.066667 us, or 66 2/3 ns.

You have to test it frequently, the reason is that smoke may be visible or may be not and you want to see all particles that emanate from any kind of smoke, specially during night time when you are asleep. Most of dust/ash particles may not be visible and via ionizing detector they will be!!!! Alarm will go off making alert sound and you will be safe.

So, sumirizing, you need to test ionizing smoke detector to see if sensor is in ok condition.

Excitation tables helps to know the input conditions of the flip flops that will cause the required transition from the present state to the next state.

No. It's an entirely different device. Look up the data sheets on them. A CA307 is a single-ended op amp and a CA3070 is a video chroma key device. Try a LM741 op amp. Radio shack stocks them

Sample Rate. Good Luck @ Full Sail!!

No. A unijunction transistor (UJT) is entirely different in design and application than a bipolar junction transistor (BJT). The UJT works on the principle of voltage modulation of the effective substrate resistance, while the BJT works on the principle of current amplification from one junction to the other, usually base-emitter to collector-emitter.

Centrifugal compressor

You could use the voltage divider rule to reduce the voltage. Using two resistors in series, the input voltage will drop across each resistor by an amount that is proportionate to the values of the resistors.

If the 1st resistor is 10K and the 2nd resistor is 100K, the voltage drop across the 10K will be 10 times LESS than that of the 100K resistor. The total voltage drop across both resistors will be equal to the supplied input voltage.

Work out the ratio of voltage you need from the total input voltage and use 2 resistors will that give you the same ratio. Connect the LEDs in parallel with the resistor the gives you the voltage you want. Use a MM to measure the voltage across the resistor before wiring LEDs.