Thursday, May 21, 2015
Monday, December 1, 2014
XII Computer Science and Application Notes
+2 CS- 61 pages
+2CA for Humanities- 48 pages
Plus Two Computer Science Class Notes
Plus Two Computer Application Class Notes (Humanities)
Monday, November 3, 2014
Plus One Physics,Malayalam and Plus One and Plus Two Biology notes
http://www.mediafire.com/download/s0ashz567u6jjjj/1_Measurement_to_Laws_of_Motion..pdf
http://www.mediafire.com/download/7ra5g3t97c3i8ui/2_Work_Energy_Power_to_Properties_of_Liquids.pdf
http://www.mediafire.com/download/9gp4kc2wp18a85k/3_Thermal_Properties_&_Heat_and_Thermodynamics.pdf
http://www.mediafire.com/download/bqgjq7i01zpon1e/4_Oscillation_and_waves.pdf
Plus One Malayalam
http://www.mediafire.com/download/nh18cas579dpv5e/Eraum_Keniyum_Malsyam_dileep.pdf
http://www.mediafire.com/download/cddujeqv3uddvk5/Mathyam_vijesh.pdf
http://www.mediafire.com/download/n3aiibbm7bjva7b/Sasthrakriya.pdf
http://www.mediafire.com/download/t2zwyb39jym7a7w/sasthrakriya_Dr_Suresh.pdf
http://www.mediafire.com/download/3prygognigmbbic/nilakkuyil.pdf
http://www.mediafire.com/download/hxio4yxhp2io1oy/chalachithragaanam.pdf
http://www.mediafire.com/download/s9b1wls7yxx3i9k/unjalil.pdf
Plus One and Plus Two Biology notes
http://www.english4keralasyllabus.com/2014/02/1-2-biology-instant-notes.html?utm_source=feedburner&utm_medium=email&utm_campaign=Feed%3A+English4keralasyllabusblogspotcom-blog4KeralaSyllabusEnglishTeachersStudents+%28english4keralasyllabus.blogspot.com-Blog+4+Kerala+Syllabus+English+Teachers+%26amp%3B+Students%29
Wednesday, October 22, 2014
Plus Two Physics, Chemistry,Maths notes and Questions
Physics
Physics mikavu
Physics Keynotes
Physics Questions
Physics Revision Part I
Physics Revision Part II
Chemistry
Chemistry Mikavu
Mathematics
Maths Mikavu
for +2 chemistry notes, send your mail id to crkrishnadas@gmail.com
Monday, August 18, 2014
Monday, May 19, 2014
Tuesday, January 24, 2012
Entrance Examination
Friday, October 14, 2011
ഹയര്സെക്കന്ഡറി അധ്യാപക പരീക്ഷയില് ഒട്ടേറെ പിഴവുകള്
Posted on: 15 Oct 2011
ബിനു ഫല്ഗുനന്
പ്രശ്നമുന്നയിക്കപ്പെടുന്ന 26 ചോദ്യങ്ങളില് ആറെണ്ണത്തിനുള്ള ഉത്തരങ്ങള് ചോദ്യക്കടലാസില് ഇല്ല. പിന്നെങ്ങനെ അതിനുള്ള ഉത്തരങ്ങള്കൂടി ഉത്തരസൂചികയില് നല്കിയെന്ന് ഉദ്യോഗാര്ഥികള് ചോദിക്കുന്നു. സിലബസില് പറയുന്ന പലഭാഗങ്ങളും സ്പര്ശിക്കാതെയാണ് ചോദ്യപേപ്പര് തയ്യാറാക്കിയതെന്നും പല ചോദ്യങ്ങളും താഴ്ന്ന നിലവാരം പുലര്ത്തുന്നവയായിരുന്നെന്നും ആക്ഷേപമുണ്ട്.
താത്കാലിക ഉത്തരസൂചികയില് പരാതികളുണ്ടെങ്കില് അവ പരിഗണിച്ച് പുതിയ ഉത്തരസൂചിക പ്രസിദ്ധീകരിക്കും എന്നതാണ് പി.എസ്.സിയുടെ നയം. ഇതനുസരിച്ചായിരിക്കും മൂല്യനിര്ണയം. താത്കാലിക ഉത്തരസൂചിക പ്രസിദ്ധീകരിച്ച് 15 ദിവസത്തിനകം പരീക്ഷാകണ്ട്രോളര്ക്ക് കൃത്യമായ ഫോര്മാറ്റില് തെറ്റ് തെളിയിക്കുന്ന വിശ്വാസയോഗ്യമായ റഫറന്സുകള് സഹിതം നല്കുന്ന പരാതികളാണ് പരിഗണിക്കുക. ഉദ്യോഗാര്ഥികളില് പലരും പരാതി അയച്ചുകഴിഞ്ഞു.
ഹയര്സെക്കന്ഡറി കമ്പ്യൂട്ടര് സയന്സ്/കമ്പ്യൂട്ടര് ആപ്ലിക്കേഷന്സ് അധ്യാപക പരീക്ഷകള്ക്ക് സ്റ്റേറ്റ് എലിജിബിലിറ്റി ടെസ്റ്റും (സെറ്റ്) ബി.എഡും ആവശ്യമില്ല. മാത്രമല്ല, എം.എസ്സി കമ്പ്യൂട്ടര് സയന്സ്, എം.സി.എ, എം.ടെക് ബിരുദധാരികളുടെ അഭാവത്തില് എം.എസ്സി മാത്സ്, ഫിസിക്സ് ബിരുദക്കാരെയും ബി.ടെക്, ബി.എസ്സി കമ്പ്യൂട്ടര് സയന്സ് ബിരുദക്കാരെയും പരിഗണിക്കും. ഇവര്ക്ക് കമ്പ്യൂട്ടര് ആപ്ലിക്കേഷനില് ഡിപ്ലോമ (പി.ജി.ഡി.സി.എ) ഉണ്ടായിരിക്കണമെന്നുമാത്രം.
HSST
(In the question paper with Question Booklet Code D; the following Questions are erroneous.
Answers given by PSC is underlined)
12. Which is not possible in a thread
A.Ready B.Wait C.Suspended D. Running
Correct is B
[Comment:- “Thread exists in several states. A thread can be running .It can be ready to run as soon as it gets CPU time. A running state can be suspended”. It is quoted from "The Complete Reference JAVA 2" by Herbert Schildt –fourth Edn. page 273. ]
18.Bankers algorithm in resource allocation deals with
A. Dead lock prevention B.Dead lock recovery C. Dead lock avoidance
D. Mutual Exclusion.
Correct is C
[Comment:- “The deadlock avoidance algorithm that we describe next is applicable to such a system,but is less efficient than the resource –allocation graph scheme. This algorithm is commonly known as Bankers algorithm” .It is quoted from "Operating System Concepts" Sixth Edition by Silberschatz]
19.Thrashing Occurs in
A. large computers B.a natural consequence of virtual memory system
C.can always be avoided by swapping D. Poor Paging Algorithm
Correct is D
[Comment:- As per "Operating System Concepts" Sixth Edition by Silberschatz, ‘A process is thrashing if it is spending more time paging than executing’(ie,page fault occurs frequently). If we work with a poor paging algorithm it must be engaged in paging activity almost in all time. No. of Page faults depends on paging algorithm. As poor paging algorithm is used page fault occurs frequently. That is thrashing.
Given answer has no role in thrashing. Apart from all, it not even matches sentential to the given question. That is, “ Thrashing Occurs in can always be avoided by swapping” . What does it mean????]
31.Error correction in Data Link Layer is achieved by
A. Equalization B.Cyclic Redundancy Code C.Hamming Code D.Bit stuffing
Correct is C
[Comment:-‘Cyclic Redundancy Code’ Error detection Code only. Hamming Code is an error correcting code used in Data link layer.Please refer "Computer Networks" fourth Edition by Andrew. S. Tanenbaum page 193]
38.In any undirected graph ,the sum of degree of all nodes is
A. Must be even B.is always ODD C. need not be even D.is twice the number of edges
Answer : No Answer[correct is A&D]
[Comment:- D is true. But it also implies option A is true. Because twice of any number “must be even” ]
48. Which is Universal Gate?
A. AND B. NOR C.XOR D.NOT
Correct is B
[Comment: A universal gate is one from which all other basic gates can be formed. NAND gate& NOR gate are called Universal]
49. How many NAND gates are needed to perform X.Y ?
A. 3 B. 4 C. 2 D.1
[Comment:- Connect two NAND gates serially]
For qns 48&49;refer “Digital fundamentals" by Floyd, “Digital fundamentals" by Floyd&Jain
51.Which is the access method to take data from tape memory
A. Direct B. Sequential C. Parallel D. Serial
[Comment: “ Sequential access is based on a tape model of file” it is quoted from "Operating System Concepts" Sixth Edition by Silberschatz page 380
Please refer any fundamental books.eg:- "Computer Fundementals" by P.K Sinha]
52.8241 Code is
A. BCD Code B. Gray Code C. Excess 3 Code D. ASCII
[Comment:- BCD Code is 8421 code(not 8241); Gray code and Excess3 code are unweighted codes. Please refer "Computer System Architecture" by M.Morris Mano ]
53. 1001000010011001 base 2 is equivalent in base 16 is
A. 9899 B. 9989 C.8999 D. 9999
No answer
[Comment : To convert a binary number in to Hexadecimal(base 16) .Binary number is grouped(with 4 digits in agroup) from left. Then each group’s decimal equivalent together gives answer. Here 1001000010011001 is grouped as 1001, 0000, 1001, 1001. decimal equivalent of each group is 9 0 9 9. Hence 9099 base 16 in the answer]
61. Which is programmable interval timer?
A. 8253 B. NE555 C. 8275 D. 8251
Correct anser is A
[Comment:- just use the link http://en.wikipedia.org/wiki/intel_8253
Or refer ."Computer fundamentals:architecture and organization " by B.RAM
"A formal description of intel 8253" by A.J.H.M Peeli]
72.Recursively Enumerable Languages are closed under
A. Union B. Intersection C. Complementation D. Concatenation
[No Answer[correct is A&B]
[Comment:- Therom 11.3 in "Introduction to formal languages and Automata" by Peter Linz “ says “There exists a recursively enumerable language whose complement is not recursively enumerable”
Use the link to get clarification http://alleystoughton.us/forlan/book-and-slides/slides-5.2.pdf
73. The grammar that produce more than one parse tree for same sentence is
A. Ambiguous B. Un ambiguous C. Complementation D. Concatenation Intersection
(Correct is A)
[Comment:- "Introduction to formal languages and Automata" by Peter Linz “ definition 5.5 of Ambiguous grammar is enough]
81. In data manipulation the first element of T[5] is
A. T[1] B. T[0] C. T[5] D. T[3]
Correct is B
[Comment:- Unless explicitly specified first element is stored at 0th index.
Clearly it is depicted in "Computer Science" for Higher Sceondary Course Class XI, prepared by SCERT ,Thiruvananthapuram,Govt of Kerala,Dept of Education page 140]
89. Who designed the first Digital Computer using Binary system
A, Blaise Pascal B. Agutha Ada C. Isaac Newton D. Sakunthala Devi
[Comment : B,C,&D are persons not related to the design of computers.
http://en.wikipedia.org/wiki/history_of_computer_ science]
91. Which of the following preposition is a tautology?
A. P U Q→ P B. P →(Q→ P) C. PU(Q→P) D. None of these
Answer is B
[Comment:- if a an expression is Tautology ;its all truth values are TRUE.
Proof:-
P Q Q->P P->(Q->P)
F F T T
F T F T
T F T T
T T T T
Hence the answer
92. p→q→r is equivalent to
A. p→q→r B. p→(q→r) C. pU(q→r) D. None of these
Answer is A
[Comment:- No explanation is needed. All we know that p→q→r is equal to p→q→r
Then how ‘ None of these’ comes]
93. Give the name of linear list in which elements can be added at ends but not in the middle
A. Array B. Queue C.Tree D. Cicrcular Queue
[Comment:- In Array we can insert elements any where . Hence A is wrong
By definition of Queue itself. Queue is a datastructure to which elements can be added at one end only called rear and deleted from the other end called front. Hence B is wrong
In Tree values are inserted at branches.Hence C is wrong]
26. Resolution of Video Display Unit does not depend on
A. Raster Scan rate B. Band width C. Vertical and Horizontal Scan D. Screen Size
Answer is B
[Comment: Resolution is expressed as horizontal &vertical screen values(Eg:-800x600 pixel). Hence screen size has significance. But Bandwidth is a term related to data communication]
27. 26. Resolution of Video Display Unit does not depend on
A. Raster Scan rate B. Band width C. Vertical and Horizontal Scan D. Screen Size
[Comment: It is same question pasted ….! Hence it must be removed]
45. The Equations will have:
A. no unique solution B. Only one solution C. has only two solution D. has infinite
[Comment:It carries no sense. Those who prepared the question forgot to add an equation in the question.
Equations can be of may types linear,quadratic,cubic,degree4,degree5,………degree n. All these have different number of solutions. Ie,1 solution,2solution, 3solution, 4solution, 5solution,……… n solution]
Sheeba
9846896974
Sunday, March 20, 2011
Pay Revision and Fixation- Discussion
When I asked a relative of mine , who is expert in salary matters (retired from treasury) said we will get maximum benefit , if we choose joining date for salary fixing
for me 23/06/2010 is the best date for fixing
convey ur opinions
we can all select best one
sreekanth/Krishnadas
Very Urgent
If you following persons, tell them to clear the CR at the directorate contacting the B3(computer science) section
it urgent
1. Prasad PK, Thalassery
2. Amarnath EP , Ernakulam
3 Bhuvanendran Nair, TVM
4. James Mannakkatt, Kasargode
5. Suresh Babu MP
6. Sali Thomas
7. Bhaskaran
8. Jayasree MR
regards
sreekanth
Monday, December 13, 2010
Probation Declaration December 2010
The following persons pls submit probation proforma (2 copies)
to our section Ad.B3 section of DHSE
once they submit that their probation will be declared fast.
If possible send it in person or speed post
1. Sreejith PK
2. Jayanthi C
3. Shahina H
4. Sreekanth NS
5. Ismail AS
6. Lijuraj
7. Sherin Das
8. MR Sreekumar
9. Jith KS
10.Thushara Bose
11.Smitha Karunan
regards
sreekanth.K
Thursday, August 12, 2010
Attention-Probation Declaration
Ekm
====
Indhu C Muraleedharan
Babitha Varghese
Divya Xavier
Kottayam
=======
Ushas M Sathyan
Thomas Varghese
Sajeev V.R
Kollam
=====
Dileepkumar P
Susan Joy
Rajani O
Thrissur
======
Bindhu E P
Sini P
Smitha Karunan
Wayanad
=======
Sreejith P.K
Kozhikode
=======
Sreekanth N.S
Shahina
Palakkad
=======
Jayanthi C
Pathanamthitta
===========
Sindhu Cheriyan
Note: Others who didn't have police verification may need to submit entire documents once more.As the papers r missing regularly in the DHSE, better to submit by hand in the section Ad.B3 section which handles our subject matters.
Saturday, June 26, 2010
Generation of SDO bills through SPARK-Problems and Solutions
1.It may display "you don't have SDO Privilege"
Sol: Login as Nodal officer. Go to Administration->Edit employee record. then give your PEN
and choose Present Salary details. Set your SDO code as 6 digit number. if SDO code has only
5 digit, then attach one zero at left side.Then press confirm.
2. You can't generate bill
Sol:Login as Nodal officer and create a SDO bill type(it must be done only once).
3.You canot see the bill to print
Sol: The bills are in PDF format. so you must have a PDF reader s/w like Acrobat Reader
etc. It is better to install "Foxit Reader" from internet for using PDF files.Foxit Reader
is a simple PDF s/w.
If you have any more doubts, then feel free to call 9447831988.Your suggestions are also
accepted.
Krishnadas.C.R
crkrishnadas@gmail.com
Wednesday, February 17, 2010
Practical Mark Entry Sheet & Income Tax Calculator
http://rapidshare.com/files/351914353/Practical_Marklist.xls.html
or
http://rapidshare.com/files/351916132/Practical_Marklist.xls
Click on any one of the above links.Choose "Free User" in the window. Download button will appear soon!!
Download and use it!!!
An easy way to Calculate INCOME TAX in Excel format:
http://sites.google.com/site/easytaxsite/Home/ECTAX-2010feb20version.XLT?attredirects=0&d=1
For suggestions and doubts,
contact
Krishnadas
9447831988
Important Information
We wish to start a new Website for Thrissur District Computer Teachers' Association with server space for our academic related activities like sharing files,tutorials etc.For that purpose,it is estimated that approximately Rs 4000 is needed for creating and maintaining such a site.It may be very useful for all the members of our association.
So, we are requesting you to contribute a minimum of Rs 100 for the above purpose and that amount may be handed over to Sri.Pran,HSST Vivekodayam HSS Thrissur on 20-02-2010 at our practical meeting venue ie Govt Model Boys HSS,Thrissur.
We request all type of your co-operation for the same.
If any doubt, please feel free to call me:
Krishnadas.C.R
9447831988
Softwares for Income tax calculation is available at following links:
http://rapidshare.com/files/351840918/tax.zip.html
or
http://sites.google.com/site/easytaxsite/Home/ECTAX-2010feb20version.XLT?attredirects=0&d=1
Monday, January 25, 2010
Q.paper Download 2010
i have collected all the Q.papers from our DHSE site and put them in one drive in order to reduce difficulty.
the site is
www.flipdrive.com
login as
username : crkrishnadas
password: hsstcomputer
u can see a link called my drives in left side. in that quetion paper 2010 is there. in that download required zip files
with regards,
krishnadas
9447831988
Saturday, January 23, 2010
Windows Folder Hiding
മറ്റ് സോഫ്റ്റ്വെയറുകളെ ആശ്രയിക്കാതെ തന്നെ നമുക്ക് സ്വകാര്യമായി ഒരു folder ഉപയോഗ്ഗിക്കാം.ഇതിനായി താഴെ കോടുത്തിരിക്കുന്ന നിര്ദ്ദേശങ്ങള് പാലിച്ചാല് മതി ആദ്യമായി നിങ്ങള്ക്ക് ആവശ്യമുള്ള folder നിര്മ്മിക്കണം ഇനി existing folder ആണെങ്കില് അത് ആയാലും മതി ആ ഫോള്ഡറിന്റെ പേര് xxx എന്ന് വെയ്ക്കാം,അത് C Drive ആണ് നിര്മ്മിച്ചത് അടുത്തതായി നിങ്ങളുടെ Command Prompt ഏടുക്കണം അതിനായി start ല് ക്ലിക്ക് ചെയ്ത് run എടുത്ത് അതില് cmd എന്ന് ടൈപ്പ് ചെയ്ത് enter കീ അമര്ത്തണം അതിന് ശേഷം Command Promptല് attrib +s +h C:\xxx എന്ന് ടൈപ്പ് ചെയ്ത് Enter അമര്ത്തണം ഇത് ചെയ്ത് കഴിയുമ്പോള് Foldder Hidden ആവുകയും,സെര്ച്ച് ചെയ്താല് പോലും കാണുകയും ഇല്ല ഇനി ഈ ലോക്ക് ചെയ്ത Folder തുറക്കണം എങ്കില് attrib -s -h C:\xxx എന്ന് ടൈപ്പ് ചെയ്ത് Enter അമര്ത്തണം







