Why are Crystal Oscillators required?
Crystal oscillators have only one function. That is to provide stable clock pulses to the digital circuit. Almost all the digital circuits require clock pulses… Read More »Why are Crystal Oscillators required?
How does a watch keep working at the same pace until the last drop of a battery cell?
Well, this is actually a very interesting question technically. And it gets us to how quartz movements work. I beg the pardon from the more… Read More »How does a watch keep working at the same pace until the last drop of a battery cell?
Matrix Keypad with Atmega8 – part 2
In the previous post – Matrix Keypad with Atmega8 – part 1, we discussed why a matrix keypad is useful and how we can use… Read More »Matrix Keypad with Atmega8 – part 2
Matrix Keypad with Atmega8 – part 1
Many embedded applications require a large number of keys connected to a computing system. For example – a PC keyboard, Cell Phone keypad and Calculators.… Read More »Matrix Keypad with Atmega8 – part 1
Polling Vs Interrupts
We may have many external devices attached to the CPU like a proximity sensor, temperature sensor, buttons, etc. These devices also need CPU attention. Lets… Read More »Polling Vs Interrupts
Risk areas in Embedded Systems Development: Development Process
Every project, irrespective of the domain, has processes associated with it. These process make sure the development goes through smoothly and mistakes are identified before… Read More »Risk areas in Embedded Systems Development: Development Process
Priority inversion problem
Mars pathfinder is the first mission of NASA’s Discovery program for investigating the atmosphere and other factors of Mars. Although the project was successful from… Read More »Priority inversion problem
Priority Scheduling for shared resources – semaphores
Safety-critical real-time systems have both functional and non-functional requirements. The functional requirement specifies what an application does while the non-functional requirement specifies the quality of… Read More »Priority Scheduling for shared resources – semaphores
Mars Pathfinder – What really happened?
Launched on December 4, 1996 by NASA aboard a Delta II booster, the Mars Pathfinder landed on July 4, 1997 on Mars’s Ares Vallis, in a region called Chryse Planitia in the Oxia Palus… Read More »Mars Pathfinder – What really happened?
Compilation process of C programs
C is a high level language and it needs a compiler to convert it into an executable code so that the program can be run… Read More »Compilation process of C programs