Implement a C++ program that :

1. stores in a container the following key words:

CMOS

sCMOS

CCD

sensor

image

2. reads a text file sensors.txt to collects statistical data that show how many times each

keyword appears in the text file

3. Prints a report that shows how many times each keyword has been fond. The keywords must be

sorted according to how many times they have been counted. 

 

Most modern digital cameras use a CMOS image sensor because CMOS sensortechnology in recent years has leapfrogged CCDs.An example is the fact that they incorporate an integrated circuit, helpingreduce costs. CCD is still in use for cheaplow entry cameras, but weak in burst mode. Both types of sensor accomplish thesame task of capturing light and convertingit into electrical signals.Each cell of a CCD image sensor is an analog device. When light strikes the chipit is held as a small electrical chargein each photo sensor. The charges in the line of pixels nearest to the (one ormore) output amplifiers are amplified andoutput, then each line of pixels shifts its charges one line closer to theamplifier, filling the empty line closest to theamplifiers. This process is then repeated until all the lines of pixels have hadtheir charge amplified and output.A CMOS imaging chip is a type of image sensor that has an amplifier for eachpixel instead of the few amplifiers of a CCD,this results in less area for the capture of photons than a CCD, but thisproblem has been overcome with microlens in frontof the photodiode that direct light (that would have otherwise hit the amplifierand thus not be detected) into the photodiode.Some CMOS imaging sensors also use Back-side illumination to increase the numberof photons that hit the photodiode.CMOS sensors can potentially be implemented with fewer components, use lesspower and provide faster readout than CCD sensors.Another hybrid CCD CMOS architecture, sold under the name sCMOS consists of CMOSreadout integrated circuits (ROICs) that arebump bonded to a CCD imaging substratea technology that was developed forinfrared staring arrays and now adapted to silicon baseddetector technology. Another approach is to utilize the very fine dimensionsavailable in modern CMOS technology to implement a CCDlike structure entirely in CMOS technology. This can be achieved by separatingindividual poly-silicon gates by a very small gap.These hybrid sensors are still in the research phase and can potentially harnessthe benefits of both CCD and CMOS image sensors.

• 1495086584-sensors.txt

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Status NEW Posted 18 May 2017 05:05 AM My Price 9.00

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