CDAC 2013-2014, EXAM PATTERN, SYLLABUS AND TIPS

CDAC 2013-2014..!!!!

.............EMBEDDED TRAINING INSTITUTE EXAM..............

!!!!!..BEST EMBEDDED TRAINING IS AT C-DAC ..!!!!!!!

There are many courses and many institute giving training in the various field after BE. As plain BE student are rarely get  placed, and if there are get placed its is hard to get the good package, also the company hiring  need to give you the training. And even for that training you have to pay and still the joining date doesn't get confirmed.

Today many STREAMS are available in the BE, but none of them are practical oriented. C DAC is gov. institute that is giving training of 6 months in following fields:

details from CDAC 2013(AUGUST ADMISSION)  EXAM:

COURSE DETAIL :

COURSE CODE---|-----COURSE NAME---------|----FEE----|            
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                                               CATEGORY I (SECTION A in C-CAT)
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PG-DGI                   | Post Graduate Diploma in     |₹79000/-   |
                                | Geoinformatics                     |                  |
PG-DHI                   | Post graduate Diploma in      | ₹79000/-  |              
                                | Healthcare Informatics          |                  |
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                                               CATEGORY II (SECTION A+B in C-CAT)
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PG-DAC                 | Post Graduate Diploma in     | ₹79000/- |
                               | Advance Computing              |                 |
PG-DWiMC           | Post graduate Diploma in       | ₹79000/- |
                               | Wireless and Mobile              |                 |
                               | Computing                            |                 |
PG-DSSD               | Post Graduate Diploma in      | ₹69000    |
                              | System Software                    |                 |
                               | Development                         |                 |
PG-DITISS            | Post Graduate Diploma in       | ₹69000    |
                               | IT Infrastructure                     |                 |
                              | System & Security                  |                 |
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                                               CATEGORY III (SECTION A+B+C in C-CAT)

------------------------------------------------------------------------------------------------------------PG-DESD               | Post Graduate Diploma in        | ₹69000/- |

                               | Embedded System Design        |                 |
PG-DVLSI             | Post graduate Diploma in          | ₹79000/- |
                               | VLSI Design                            |                 |
PG-DIVESD           | Post Graduate Diploma in        | ₹79000    |
                               | Integrated VLSI & Embedded |                 |
                               | System Design                         |                  |        
PG-DASS              | Post Graduate Diploma in         | ₹79000    |
                               | Automation & SCADA            |                 |
                               | System                                     |                 |

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CST Eaxm

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PG-DST              | Post Graduate Diploma in         | ₹79000    |
(1 year)                | Software Technology               |                 |
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SYLLABUS:-

SECTION------------TOPIC-----------------------------REFERENCE BOOK--------------------------

      A          : ENGLISH                                         : Any High School Grammar Book

                   : Quantitative Aptitude &                      : Refer R S Aggrawal 

                      Reasoning                         

      B          : Computer Fundamental                      : Foundations of Computing (Pradeep Sinha)

                  : Data Communication & Networking   : CompTIA Network (Todd Lammle)

                  : C programming                                   : Let us C (Yashavant Kanetkar)

                  : Data Structures                                   : Data Structures Through C in Depth

                  : Operating Systems                              : Operating System Principles (Silberchatz)

                  : OOP's Concept                                  : Test your C++ skill (Yashavant Kanetkar)

     C          : Computer Architecture                      : Computer organization & Architecture (W Stallings)  

                  : Digital Electronics                               : Modern Digital Electronics (R P Jain)

                  : Microprocessor                                  : 8085 by Ramesh Goankar

TYPE OF QUESTIONS:

SECTION A: 

• Question will come on the basis of qualitative aptitude 
• covers question on TRAIN, BOAT-STREAM , PERCENTAGE, PROFIT AND LOSS etc.
• Reasoning will cover the Paragraph questions where a paragraph will be given and at-most five question will be asked regarding to it, coding form question can be asked.
• Basic grammar question with fill in the blanks .

      DIFFICULTY LEVEL :

       MODERATE

SECTION B :

• This section will cover question depend on the basic knowledge of the computer. 
• all the above mentioned books are useful
• Question for the output in C or C++ is asked.
• Question from the deep knowledge of OS is asked.

     DIFFICULTY LEVEL:

     FOR CSE/IT: MODERATE

     FOR ETC/EC/ET/EDT: TOUGH

SECTION C :

• Question on the 8085 microprocessor.
• Qestion on the 8051 is also asked (not mentioned in the syllabus)
• Question on the 80386 is also asked (not mentioned in the syllabus)
• Memory maping
• Basic gates (EX-OR,EX-NOR, NAND,NOR)
• Interrupt based question.
• Type of instructions
• Flip-Flop  based question
• A/D or D/A converter

  DIFFICULTY LEVEL:

     FOR CSE/IT: TOUGH

     FOR ETC/EC/ET/EDT: MODERATE

I TRIED TO EXPLAIN YOU ABOUT THE PATTERN , SYLLABUS AND TYPE OF QUESTIONS ASKED  IN THIS EXAM .....THE EXAM GET OVER ON 7 JULY 2013 FOR AUGUST BATCH.......

DECLARATION OF THE NEXT EXAM DATE MAY COME IN NOVEMBER-DECEMBER..!!!!

THERE ARE NO OFFICIAL PAPER FOR THE PREPARATION OF THIS EXAM.

OFFICIAL WEBSITE:

http://cdac.in/

IF YOU WANT MORE DETAILS FOR THIS EXAM THEN POST YOUR COMMENT , IT WILL BE MY PLEASURE TO GUIDE YOU..!!!!

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TIMER IC 555

IC 555

There are several IC's are present in the market. As per the revolution of electronics devices the Analog devices has not in use now a days. One of the very interesting IC for the use of the Beginners in the field of electronics or in the field of embedded is IC 555. It is 8 pin DIP package IC. basically it is well known as TIMER IC.Basic external circuitry  required for the working of this IC is only two resister and a capacitor, only these three component generates the wave form varying  in DUTY CYCLE along with its Ton and Toff time
This integrated circuit is used for timing. Many circuits are composed of timers and the most common of them all is the 555 Integrated Circuit. It is use in many commercially manufactured items such as videos recorders and timers.

and its output is taken from the pin no3. 

 It has two comparators which receive their reference voltage by a set of three resisters connected between the supply voltage Vcc and ground. The reference voltage of comparator 1 is 2Vc/3 and for comparator 2 is Vcc/3. These reference voltages have control over the timing which can be varied electronically, if required by applying a voltage to the control voltage input terminal. But in case if this is not required then a bypass capacitor of value 0.01uF should be connected between this terminal and ground to bypass noise or ripple voltage from the power supply.

On negative going excursion of the trigger input, when the trigger input passes through the reference voltage Vcc/3, the output of the comparator 2 goes HIGH and set the Flip-Flop. On the positive going excursion of the threshold input the output of the comparator 1 goes HIGH when the threshold voltage passes through the reference voltage 2Vcc/3. This reset the Flip-Flop.

The Flip-Flop is cleared when the reset input is less then about 0.4V. When this input is not required to be used it is normally return to Vcc.

An external timing capacitor, C is to be connected between the discharge terminal and ground.When the flip-flop is in the reset state , its Q(bar) (complement of Q) =1, which drives T1 to saturation thereby discharging the timing capacitor. The timing cycle starts when flip-f;op goes to the set state and therefore T1 is off. The timing capacitor charges with the time constant Ʈ=R1, C, where C is timing capacitor and R1 is an external resistor to be connected between the discharge terminal and Vcc. 

The output is logic 1 whenever the transistor T1 is off and at logic 0 when T1 is on. The load can be connected either between the output terminal and Vcc or between the output and ground terminal. There are four possible output connection. The maximum sink and source current is 200mA. The voltage corresponds to the high output is approximately 0.5V below Vcc and for low it is approximately 0.1V. IC 556 contains teo 555 timer circuit and is available in 114 DIP package.

PIN DESCRIPTION:

Pin-1, GROUND : It is the ground pin of the IC. The negative terminal of DC power supply or battery is connected to this pin. Hence IC 555 works always on single rail power supply and never on dual power supply.

Pin-2, TRIGGER: It is known as TRIGGER PIN. As the name suggests in triggers i.e. starts the timing cycle

of the IC. It is connected to the inverting input terminal of trigger comparator inside the IC. As the pin is connected to inverting input terminal, it accepts negative voltage pulse to trigger the timing  cycle. So it trigger   s when the voltage at this pin LESS THAN 1/3 of the supply voltage.

Pin-3, OUTPUT: This is the OUTPUT PIN of the IC. It can SINK or SOURCE a maximum current of200mA. Sinking the current means, when the output of the IC is at logic-0 state i.e. LOW and so it can absorb current into its output. Similarly sourcing the current means, when the output of the IC is at logic-1 i.e. HIGH and so it can give out current from its output. Due to this property of the IC, we can use it in number of typical digital application also.

Pin-4, RESET: It is the reset pin of the IC. When it is connected to positive terminal of battery. the IC

works normally. However, when it is grounded (either directly or through a maximum of 100k-ohm resistor), the IC stops its working completely and its timing cycle stops, i.e. the charging or discharging of the external capacitor stops, so the output of the IC is locked in logic-0 state.It is interesting to note that reset voltage required by this pin is typically 0.7V at a reset current of 0.1mA. How ever in general application, this pin is always connected to positive terminal to the proper working of the IC. 

Pin-5, C. VOLTAGE:  This is known as the Control Voltage pin. The 2/3 of supply voltage point on the terminal voltage divider is brought out to pin-5, known as the control terminal of IC.

Pin-6, THRESHOLD: This is known as the THRESHOLD PIN. It finalizes the timing cycle of the IC, when its voltage is equal to or greater than 2/3 Vcc, the outpout is at logic-0 state. Since this pin is connected to non-inverting terminal of threshold comparator inside the IC, it accepts positive going pulse to end up the timing cycle.

Pin-7, DISCHARGE: Its is known as DISCHARGE PIN. It discharges the external capacitor into itself but when it is fully charged. It is connected to the collector of an NPN transistor inside the IC. Due to this, the discharging current going into this pin must not exceed 50mA, otherwise the internal transistor may get damaged. 

Pin-8, +Vcc: It is known as the +ve supply terminal of the IC. The battery voltage connected across this pin and ground pin should not exceed 18V. Generally the range of operation voltage of the IC is 3V-18V.

This ic work on the three state :

a). Monostable :- 

An electronic circuit that produces an output pulse for a fix time period in response to 

trigger pulse and then return to its quiescent state. The width of the output pulse produce depend upon the timing element (R and C) used in the circuit . It is also known as one-shot circuit circuit.

b). Astable :- 

A multivibrator circuit having bothe the state as quasi-stable states. It is square wave      oscillator. It is also known as Free-Running multivibrator.

c). Bistable :- 

A multivibrator circuit that has both the state as stable.

Its input and output are directly compatible with both TTL and CMOS logic circuits. It has two comparators which receives their reference voltages  by a set of three resistances connected between the supply voltage Vcc and ground. 

The the the figure shows the DIP package of the IC, and the basic circuit to connect to the ASTABLE mode. The out put can be connected with the LED's our can be use as the frequency generator as square wave for another circuit.

CALCULATION :- 

DUTY CYCLE  : D=((R1+R2)/R1+2R2)*100

T1=0.7C(R1+R2)

T2=0.7CR2

F=1.4/(C(R1+2R2))

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