Friday, July 3, 2009
For those Techie Gray Cells - IV
Wednesday, June 10, 2009
For those Techie Gray Cells - III
Monday, June 1, 2009
For those techie Gray Cells - II
Tuesday, May 19, 2009
For those Techie Gray Cells - I
For all you gizmo freaks techie people out there, I am gonna post a series of articles having lot of tricks and tweaks related to computing and stuff, computing basics, what do these technical terms mean etc... So enjoy...........
10 Reasons why PCs crash
I am gonna post 2 reasons in each post. The first 2 are as follows-
1-Hardware conflict
The number one reason why Windows crashes is hardware conflict. Each hardware device communicates to other devices through an interrupt request channel (IRQ). These are supposed to be unique for each device.
For example, a printer usually connects internally on IRQ 7. The keyboard usually uses IRQ 1 and the floppy disk drive IRQ 6. Each device will try to hog a single IRQ for itself.
If there are a lot of devices, or if they are not installed properly, two of them may end up sharing the same IRQ number. When the user tries to use both devices at the same time, a crash can happen. The way to check if your computer has a hardware conflict is through the following route:
* Start-Settings-Control Panel-System-Device Manager.
Often if a device has a problem a yellow '!' appears next to its description in the Device Manager. Highlight Computer (in the Device Manager) and press Properties to see the IRQ numbers used by your computer. If the IRQ number appears twice, two devices may be using it.
Sometimes a device might share an IRQ with something described as 'IRQ holder for PCI steering'. This can be ignored. The best way to fix this problem is to remove the problem device and reinstall it.
Sometimes you may have to find more recent drivers on the internet to make the device function properly. A good resource is www.driverguide.com. If the device is a soundcard, or a modem, it can often be fixed by moving it to a different slot on the motherboard (be careful about opening your computer, as you may void the warranty).
When working inside a computer you should switch it off, unplug the mains lead and touch an unpainted metal surface to discharge any static electricity.
To be fair to Mcft, the problem with IRQ numbers is not of its making. It is a legacy problem going back to the first PC designs using the IBM 8086 chip. Initially there were only eight IRQs. Today there are 16 IRQs in a PC. It is easy to run out of them. There are plans to increase the number of IRQs in future designs.
2-Bad Ram
Ram (random-access memory) problems might bring on the blue screen of death with a message saying Fatal Exception Error. A fatal error indicates a serious hardware problem. Sometimes it may mean a part is damaged and will need replacing.
But a fatal error caused by Ram might be caused by a mismatch of chips. For example, mixing 70-nanosecond (70ns) Ram with 60ns Ram will usually force the computer to run all the Ram at the slower speed. This will often crash the machine if the Ram is overworked.
One way around this problem is to enter the BIOS settings and increase the wait state of the Ram. This can make it more stable. Another way to troubleshoot a suspected Ram problem is to rearrange the Ram chips on the motherboard, or take some of them out. Then try to repeat the circumstances that caused the crash. When handling Ram try not to touch the gold connections, as they can be easily damaged.
Parity error messages also refer to Ram. Modern Ram chips are either parity (ECC) or non parity (non-ECC). It is best not to mix the two types, as this can be a cause of trouble.
EMM386 error messages refer to memory problems but may not be connected to bad Ram. This may be due to free memory problems often linked to old Dos-based programmes.
How to close multiple windows?
Note : works in all versions of Windows
If you just opened a number of separate, related windows (a folder inside a folder, and so on), there's an easier way to close them all than one-at-a-time. Hold down the Shift key as you click the X caption button in the upper-right corner of the last window opened. Doing so closes that window and all windows that came before it.
Keyboard Shortcuts
Windows key + R = Run menu
This is usually followed by:
cmd = Command Prompt
iexplore + "web address" = Internet Explorer
compmgmt.msc = Computer Management
dhcpmgmt.msc = DHCP Management
dnsmgmt.msc = DNS Management
services.msc = Services
eventvwr = Event Viewer
dsa.msc = Active Directory Users and Computers
dssite.msc = Active Directory Sites and Services
Windows key + E = Explorer
ALT + Tab = Switch between windows
ALT, Space, X = Maximize window
CTRL + Shift + Esc = Task Manager
Windows key + Break = System properties
Windows key + F = Search
Windows key + D = Hide/Display all windows
CTRL + C = copy
CTRL + X = cut
CTRL + V = paste
Also don't forget about the "Right-click" key next to the right Windows key on your keyboard. Using the arrows and that key can get just about anything done once you've opened up any program.
[Alt] and [Esc] Switch between running applications
[Alt] and letter Select menu item by underlined letter
[Ctrl] and [Esc] Open Program Menu
[Ctrl] and [F4] Close active document or group windows (does not work with some applications)
[Alt] and [F4] Quit active application or close current window
[Alt] and [-] Open Control menu for active document
[Ctrl] Lft., Rt. arrow Move cursor forward or back one word
[Ctrl] Up, Down arrow Move cursor forward or back one paragraph
[F1] Open Help for active application
Windows+M Minimize all open windows
Shift+Windows+M Undo minimize all open windows
Windows+F1 Open Windows Help
Windows+Tab Cycle through the Taskbar buttons
Windows+Break Open the System Properties dialog box
Acessability shortcuts
Right SHIFT for eight seconds........ Switch FilterKeys on and off.
Left ALT +left SHIFT +PRINT SCREEN....... Switch High Contrast on and off.
Left ALT +left SHIFT +NUM LOCK....... Switch MouseKeys on and off.SHIFT....... five times Switch StickyKeys on and off.
NUM LOCK...... for five seconds Switch ToggleKeys on and off.
Explorer shortcuts
END....... Display the bottom of the active window.
HOME....... Display the top of the active window.
NUM LOCK+ASTERISK....... on numeric keypad (*) Display all subfolders under the selected folder.
NUM LOCK+PLUS SIGN....... on numeric keypad (+) Display the contents of the selected folder.
NUM LOCK+MINUS SIGN....... on numeric keypad (-) Collapse the selected folder.
LEFT ARROW...... Collapse current selection if it's expanded, or select parent folder.
RIGHT ARROW....... Display current selection if it's collapsed, or select first subfolder.
Will post more in my upcoming posts. :)
Sunday, February 22, 2009
My Creations
For ur Best Friend
U can dedicate this poem to ur best friend, NOT BF/GF.
Just when I think I've lost my way
Something illuminates the dark
There you are leading the way
Love shining from your heart
Many friends have crossed my path
And I thank God for them all
But I got an extra special blessing
When your friendship answered my call
So much that I can thank God for:
My family and health
But when He blessed me with you
He gave me more than wealth
You understand my wonders,
And listen to my dreams.
You listen to how I feel about life and love,
And know what it all means.
As we walk our path of life,
We meet people everyday.
Most are simply met by chance.
But, some are sent our way.
These become special friends
Whose bond we can't explain;
The ones who understand us
And share our joy and pain.
For ur love
U can use this poem on Valentine's, or to impress ur angry/sad BF/GF.
For the first time I felt,
This true love in my heart,
It is buried so deep,
And that I would always keep.
You have such a sweet face,
But you are so much more,
You’re my friend & I love you,
Your flaws I ignore.
For the first time in my life,
I found my love and my life,
Without you I will cry,
For you my love, I will die.
When I lay & think, in my bed at night,
The day you’ll arrive, seems nowhere in sight.
I toss and I turn, dreaming of you,
Opening my eyes..., checking if my dreams came true.
It didn’t, again, and a tear starts to roll,
Weeping quietly..., my pillow I hold.
This is how I feel for you.
I’ve known it all along,
You are my one true love
My world...My heart...My soul.
Saturday, August 9, 2008
Some Myths about Chemical Engineering
Because you feel chemical engineering has no scope or one needs to be a "chem-worm" to be a good chemical engineer etc etc...
MYTH
Chemical Engineering is pure chemistry.
TRUTH
NO.
Professor Lewis Norton of Massachussets Institute of Technology, USA introduced the first formal degree for chemical engineers and then other universities like Penn and Tulane Universities followed.
Chemical Engineering is known so not because it involves chemistry but because when this branch was invented, they had to give some name to this branch of engineering. And they didnt name it Physical or Mathematical Engineering just because the chemistry portion in this branch is slightly more than the physics/maths portion.
You produce ammonia in lab using a test tube and a beaker. That's chemistry. But what if you have to produce tonnes and tonnes of ammonia to be used as fertilizers for lakhs of farmers in the country? This is what chemical engineers do. It takes a whole different techonology, process and a huge plant to prepare such a huge amount of ammonia. Chemical Engineers are also called Process Engineers.
The ammonia plant is one of the numerous tasks a chemical engineer performs.
Achievements of Chemical Engineering -
1-Atom as large as life
2-Plastic Age
3-Human Reactor
4-Wonder Drugs for masses
5-Synthetic fibres
6-Liquified air
7-Food Processing
8-Petrochemicals
9-Synthetic rubber...And the list goes on.
Related fields/thrust areas-
1-Computational Fluid Dynamics
2-Membrane Processes
3-Microfluids
4-Nanotechnology
5-Biochemical Engineering
6-Biomedical Engineering
7-Fuel Cell Engineering
8-Virtual Reality in Chemical Engineering
MYTH
Chemical Engineering is a new branch and it has no or very less scope.
TRUTH
Chemical Engineering has a very good scope. Some of the top employers of Chemical Engineers are-
Du Pont
NASA
General Electric
Shell
BASF
Dow Chemicals
Exxon
General Motors
Boeing
Reliance Petrochemicals
IPCL/SPIC
BARC
HPCL/BPCL
ONGC
DRDO/CSIR
TOYO/UHDE/CHEMTEX
Larsen & Toubro
IICT etc...
A survey of average salaries of various engineers was conducted in USA-
Engineering branch-Average Salary-Increase/Decrease from last year
Chemical-$55,900- +4%
Electrical-$52,899- +3.5%
Mechanical-$50,672- -0.3%
Computer Science-$50,046- -2%
I dont have exact data for other engineering branches but this data is sufficient to tell you the exact picture of chemical engineering in global scenario. Sadly enough, such surveys are not conducted in India.
After reading this post, I think you will now think twice before completely ruling out the option of chemical engineering and make a more intelligent choice.
Your comments on the post/chemical engineering/other branches of engineering are most welcome.
All the Best!!!
Saturday, May 24, 2008
Can Marks really judge a student??
Well, merely by looking at the heading, most of you must have already guessed correctly about the matter in this blog.
A student called Mr. A. Passed his XII in 2008, a so called IIT aspirant (nowadays anyone who wants to be an engineer is called an IIT aspirant). Has already written many competitive exams like JEE, AIEEE, BITSAT, Manipal, VITEEE etc.
He is sitting in his room, trying to crack a hardcore physics problem. His dad surfing the internet, actually public portals meant for students and going through the posts in which different students from all over the country have posted the marks obtained/calculated by them in different competitive exams.
Just then A shouts on top of his voice “Yes, Yes. I did it. I cracked one of the toughest problems of mechanics which none of my friends could crack.”(I will mention about these friends later in this post)
Dad: Why are you shouting so loudly?? Its OK if you have cracked this problem but lemme tell you one thing. You don’t stand anywhere in comparison to different students all over the country.
A: Huh??? What do you mean by that???
Dad: come here and see the marks calculated by these students. This guy is getting 323 in BITSAT, he is getting 366, he is getting 320 and look at this guy, he is getting a mammoth 412. And look at your score. A paltry 295.
A: But dad, I have already told you a hundred times that it was not my fault. The chemistry portion was too much knowledge based and a lot of questions asked the information not given in the chemistry books I have.
Dad: Whatever!!! You always have an excuse. Alright then, look at their AIEEE and IITJEE scores. Most of them in 200s and some of them even crossing 250. And look at your scores. AIEEE-165 and IITJEE-182.
A: (was just about to speak but suddenly stops himself because he knew that his explanations will be of no use. Instead of making his dad understand his situation, they would only serve as excuses given by him for his poor performance)
Now something about A. No need to mention that he is a genius in physics and loves this subject but on the other hand, he is not so good in maths and poor in chemistry.
It’s a fact that we are all human beings and not robots and you can’t expect everyone to be perfect in all the 3 subjects. A’s case is not much different. He has a genius’ mind but as he is not that good in chemistry, he could not score well in his competitive exams and might end up with very poor ranks in almost all of them.
So does it mean that he is not intelligent, he is not studious, he is not hardworking?? Do these marks give any idea of his intelligence, hard work and dedication?? If he is getting low marks in BITSAT just because the chemistry questions asked the info he did not have in his books, does it mean that he doesn’t stand anywhere??
And now about his friends, almost all of them are getting marks higher than him in all the exams but none of them is able to do hardcore physics problems which A can do quite easily. But just because his friends will get a higher rank and higher scores in exams, does it mean that they are more intelligent, more hard working, more studious??
Well, a better question is-Can an exam judge a person in just 3 hours?? Is it possible to judge someone’s intelligence, I.Q., determination, sincerity etc in 3 hours?? Is it possible to judge the amount of hard work put in by anyone for whole 2 years in just 3 hours?? Who knows what happens in those 3 hours. There are several reason due to which many deserving people can’t get a seat in one of the
What are those reasons??
Lemme take one more example. This time I will call this guy Mr. B.
His strongest subject-Chemistry and he is pretty decent in Maths and physics at least to the extent of clearing the cut-offs in the exams. He was pretty confident of getting a seat in IIT. But fate had something else in store for him.
To his bad luck, his family was full of IITians and people with excellent academic achievements/records. So the pressure of performing well automatically came upon him.
To add to his bad luck, his elder cousin got a rank of 52(rank changed to hide the identity but it is very close to the original rank) in JEE-07. Now his family’s expectations from him and pressure on him increased manifolds. Right from declaration of results of JEE-07 to JEE-08, the pressure kept on increasing constantly because of his family members who kept reminding him of their expectations from him.
And lemme tell you, his miseries are not over yet. He has a competitor also. His cousin brother, who has always been ahead of him in academics, has also given JEE this year. So now B has an extra pressure to perform better than his cousin.
So now, I hope that most of you can estimate the amount of pressure on B. And this pressure told upon his JEE-08. As soon as he got the question paper, his hands were literally trembling. He broke the seal of the question paper, saw the first question and imagine what? He was not able to recall even a single formula. He had to derive most of the formulae there only and that consumed most of his time. So this way, he messed up his first paper.
In the next sitting, the pressure was even higher as he had messed up his first paper but this time he was more determined to do well. He started off pretty well doing a majority of chemistry questions and some maths questions also but then he stuck some physics questions and the pressure started building again. He somehow managed to do the second paper better than the first one but his total marks are no where near the expected cut-offs.
So, you can clearly see that a deserving student who was confident of getting a rank in top 2000 in IITJEE would now hardly get any rank + his parent’s disappointment + embarrassment in front of his academically great relatives. And he was not faulty anywhere in his preparations. He is a mentally strong person but after all he is a human being and under such circumstances and pressure, a mental breakdown is not surprising.
An example of consequences of parental pressure .
Well, it is just one of the numerous reasons. I think this much is sufficient to start with. I will keep posting more such reasons and examples.
Common story of all IIT aspirants.
And lemme make it very clear that these examples are not my mind’s creation. These are real life examples of my friends, and different students I have come across till now. And to hide their identity I am using names like Mr. A, Mr. B.
I wanted a platform to express my views and that’s why I started this blog.
I can assure you one thing that you will surely find yourself in one of the examples I have posted so far /will be posting in future.
Now I am looking forward to your views. So feel free to express your views.
Can an exam judge a student’s real potential in 3 or 6 hours??? Are marks the only criteria which differentiate intelligent/deserving students with dumb people?? Is the selection of few thousand students out of lakhs on the basis of a 3 hour test justified??
In a nutshell, I want to convey this message to all the IIT-aspirants all over the country-
Never get demoralised if you fail in an exam. Don't think that you are worthless and worse/lower than IITians in any aspect. Greatdreams rightly said in his comment-
academic excellence is never ever = professional excellence.If you are deserving, if you have talent, you will ultimately succeed in life despite numerous failures.
Success doesn't mean the absence of failures; it means the attainment of ultimate objectives. It means winning the war, not every battle. ~Edwin C. Bliss