Ripple Counter

In digital logic and computing, a counter is a device which stores (and sometimes displays) the number of times a particular event or process has occurred, often in relationship to a clock signal.
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Thought for the day

ECL

 The characteristics of ECL are as follows:
(1) The Logic levels are normally 8V (Logic 1) and -1.7 V (Logic O).
(2) The transistors never saturate, it, storage delay in ECL circuits is eliminated, and hence switching speed is very high.
(3) Because of the low noise margin, 250 milli-volt, ECL circuits are not reliable in heavy industrial environments.
(4) An ECH logic block usually produces an O/P and its complement. This eliminates need for invertors.
(5)  Fan-outs are typically around 25, owing to the loco impedence mitter- follower O/PS.
(6) Typical power dissipation for a basic ECH gate is 40 ml somewhat higher than the 74AS series.
(7) The total current flow in an ECH circuit remains relatively constant regardlers of its logic states.

Study the circuit and let me know if ECLis fastest or not and if yes then why?

Toggle Flip flop

T-Flip- Flop: A T-Flip-Flop acts a toggle switch toggle means to switch over to the opposite state. It can be realized using a I-K flip flop by making T = I = K =1, as shown in the figure below:

Truth Table
        Input                                         Output
        T                                                Qn+1
        O                                                 Qn
        1                                                  Qn
Why this is known as Toggle flip flop?

Delay Flip Flop

D-Flip Flops: An S-R flip flop has 2 inputs, S & R. To store 1, a high S and low R an required. To stone O, a high R below S are needed. Thus, 2 signals an to be generated to draw an S-R flip flop. A D-flip-flop can be realized using an S-R flip- Flop as shown.

The truth table for D flip-flop is shown below:
        Clk                     D Input                           Qn+1
        0                             X                           Qn (last state)
        1                            1                                         1
        1                            0                                         0
        1                            X                              Qn (last state)

Why this is known as a delay flip flop?

Thought for the day

There are two kinds of failures:
those who thought and never did,
and those who did and never thought.
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Thought for the day

There are two kinds of failures:
those who thought and never did,
and those who did and never thought.

MIS in Finance

Example of MIS finance report in banking field

A community that believes that office & work issues can be best resolved with careful assimilation and examination of varied opinions from fellow professionals.

Serial and Parallel data transmission

Data transmission, digital transmission or digital communications is the physical transfer of data (a digital bit stream) over a point-to-point or point-to-multipoint communication channel. Examples of such channels are copper wires, optical fibres, wireless communication channels, and storage media. The data is represented as an electromagnetic signal, such as an electrical voltage, radiowave, microwave or infrared signal.

While analog communications is the transfer of continuously varying information signal, digital communications is the transfer of discrete messages. The messages are either represented by a sequence of pulses by means of a line code (baseband transmission), or by a limited set of continuously varying wave forms (passband transmission), using a digital modulation method.

Digital Logic Families

There are different digital logic families available

TTL
RTL
DTL
DCTL

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Great Thought

“Happiness is not something you postpone for the future;
it is something you design for the present.”

Transmission Inpairment

While transmitting data we Encounter different Different Inpairment these are
Attenuation
Noise
Distortion



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Data transmission

There are two Kinds of Data transmission methods
 Serial And Parallel
In parallel we transmit the data as multiple bit
Whereas in Series we transmit data bit wise....

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Thought for today

When the going gets tough the toughter one gets going.........

Flip-Flops

Its A Truth-table of a flip flop....... this particular flip-flop removes the problem of forbidden state.......

BCD to 7 segment Decoder

These are Circuit diagrams of the BCD to &7 segmented Decoder...... this Decoder is also known as IC-7447/IC-7446

MIS for Marketing

 In order to pursue market opportunities as well as anticipate marketing problem, manager need to collect comprehensive and reliable information. Managers cannot carryout marketing analysis, planning, implementation and control without monitoring and researching customers , competitors, dealers and their sales and cost data. Every firm has many information flows of interest to marketing management. Many companies are studying their executive’s information needs and design information system for marketing to meet these needs. Instead of plethora of unrelated data, an MIS combines various inputs and present integrated reports.

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