Embedded Market Job Trends

Hai all ,

 i am so happy see you all once again

Right now  IT market is having lot more openings

but remember on thing those are all for experienced people


Freshers who are trying to get a job in embedded systems its really difficult task

guys have a look on the market trend  get ready with c and data structures and

linux commands and linux basic programming  .then go to market and buy 8051

 board  do all the programs with this board and get ready to buy new arm9 board like ( friendly-arm , beagle board  like that )  do some thing with these board and try for jobs  .

  damm sure you will place in some good embedded based company :)


For Exp People exp b/w 2 to 8 years

prepare c  and data structures  :D

then u will get good job yar :D

for interview questions please refer http://campusinterviewindia.com/


cheers /''\

u r s chaitu

Embedded Market Job Trends

What is the difference between BIOS vs boot loader ?

When power is first applied to the desktop computer, a software program called the BIOS immediately takes control of the processor. (Historically, BIOS was an acronym meaning Basic Input/Output Software, but the acronym has taken on a meaning of its own because the functions it performs have become much more complex than the original implementations.) The BIOS might actually be stored in Flash memory (described shortly), to facilitate field upgrade of the BIOS program itself.

The BIOS is a complex set of system-configuration software routines that have knowledge of the low-level details of the hardware architecture. Most of us are unaware of the extent of the BIOS and its functionality, but it is a critical piece of the desktop computer. The BIOS first gains control of the processor when power is applied. Its primary responsibility is to initialize the hardware, especially the memory subsystem, and load an operating system from the PC's hard drive.

In a typical embedded system (assuming that it is not based on an industry-standard x86 PC hardware platform) a bootloader is the software program that performs these same functions. In your own custom embedded system, part of your development plan must include the development of a bootloader specific to your board. Luckily, several good open source bootloaders are available that you can customize for your project.

Some of the more important tasks that your bootloader performs on power-up are as follows:

What is the difference between BIOS vs boot loader ?

what is difference between array and stack and queue ? what is

You can think of a queue like a line at the bank. The first person to get there will get to the teller first. If a bunch of people come while all the tellers are busy, they stand in line in the order in which they arrived. That is to say, new people (items) are added to the end of the line and the first person in line is the only one who is called to a teller. In real life this is known as "first come, first served." In programming terms it's known as first-in-first-out, or FIFO.

You can think of a stack like a deck of cards. You can put down cards into a pile on your table one at a time, but if you want to draw cards, you can only draw them from the top of the deck one at a time. Unlike a queue, the first card to be put down is the last card to be used. This is known as first-in-last-out, or FILO (also called LIFO for last-in-first-out). 

A queue is a first-in-first-out data structure. When you add an element to the queue you are adding it to the end, and when you remove an element you are removing it from the beginning.

A stack is a first-in-last-out data structure. When you add an element to a stack you are adding it to the end, and when you remove an element you are removing it from the end.


An array is data structure (type of memory layout) that stores a collection of individual values that are of the same data type. Arrays are useful because instead of having to separately store related information in different variables (named memory locations), you can store them—as a collection—in just one variable. It is more efficient for a program to access and process the information in an array, than it is to deal with many separate variables.

All of the items placed into an array are automatically stored in adjacent memory locations. As the program retrieves the value of each item (or "element") of an array, it simply moves from one memory location to the very next—in a sequential manner. It doesn't have to keep jumping around to widely scattered memory locations in order to retrieve each item's value.

Imagine if you had to store—and later retrieve—the names of all of the registered voters in your city. You could create and name hundreds of thousands of distinct variable names to store the information. That would scatter hundreds of thousands of names all over memory. An alternative is to simply create one variable that can will store the same information, but in sequential memory locations.

what is difference between array and stack and queue ? what is

what is difference between array and stack? what is array what is stack

            Briefly, there are two main differences between an array and a stack.

            1)An array can be multi-dimensional, while a stack is strictly one-dimensional.

            2)An array allows direct access to any of its elements, whereas with a stack, only  

the 'top' element is directly accessible; to access other elements of a stack, you      

must go through them in order, until you get to the one you want.

           

            Another difference is

            3)Array size is fixed where as stack can grow.

what is difference between array and stack? what is array what is stack

what is the difference between zimage bz image and u image

the difference between bz image and z image is in compression mode
not only compression mode
there are many differnces

A uImage file is a kernel with a modified header for u-boot. A tool called mkimage is used to convert a zImage (regular kernel compressed image) to a uImage file. And No, zImage files, as they are, are not compatible with U-Boot. You must convert them

make zImage - Creates a gzip’d kernel image that must be installed manually.
make bzImage - Creates a bzip2’d kernel image that must be installed manual

bz image is compressed image when compared to  zimage

suggest me if any thing wrong

what is the difference between zimage bz image and u image