Tentuts-Meritox

  finding some parts in multisim is really tough work because multisim  not provide all general purpose component like 7085 and other voltage regulator. one more  bad information is that manufacturer of these component also not provide any PSPICE because output of these component are predetermined and not changed according to the circuit.

Today's many mobile comes with GPS Global Positioning System, but the question comes in mind that how it works and how they calculate the position accurately without sending any data to satellite, lets understand the concept and working of GPS Global Positioning System satellites transmit signals to equipment on the ground. GPS receivers passively receive satellite signals; they do not transmit. GPS receivers require an unobstructed view of the sky, so they are used only outdoors and they often do not perform well within forested areas or near tall buildings. GPS operations depend on a very accurate time reference, which is provided by atomic clocks at the U.S. Naval Observatory. Each GPS satellite has atomic clocks on board. GPS constellation     Each GPS satellite transmits data that indicates its location and the current time. All GPS satellites synchronize operations so that these repeating signals are transmitted at the same instant. The signal...

The most commonly used set of microcontrollers belong to 8051 Family. 8051 Microcontrollers continue to remain a preferred choice for a vast community of hobbyists and professionals. Through 8051, the world became witness to the most revolutionary set of microcontrollers.

LCDs are most common part of our day to day life. we can see it in computer, laptops, digital clocks, mobiles and many other electronics devices. LCDs are common because they offer some real advantages over other display technologies. They are thinner and lighter and draw much less power than cathode ray tubes (CRTs)

In our last tutorial we interface 2x16 LCD with 8051 in assembly, now lets display some scrolling text on LCD. it is very useful because generally we have a long text to display and a 2x16 LCD display only 16 character at a time.

In many projects circuits IC's CD4017, CD4026, CD4026 CD4511 etc are used. they all are comes under 4000 ICs series which is a CMOS (complimentary metal oxide semiconductor) based ICs. it is widely used in instruments, projects.. because it have low power consumption (µW) , drive up to 50 CMOS, 74HC, 74HTC inputs and operated between 3 to 15V power supply range.some most common ICs are listed here with pin diagram and description and their uses.

counters are used in most of all digital devices like digital clock, camera, CD/DVD recorder, mobiles etc. to count sequence in the form of pulse. and many project required a counter for counting sequence according to need of project. So in this part we are going to make a Decade Counter using CD4017 IC