G. Answer in details.
1. What are the two major components of computers? Define them.
2. Describe any four characteristics of computer.
3. How do you check the storage of a hard disk?
4. Write a short note on:
a. OCR
b. Smart card reader c. 3D printer
5. Mention the use of computers in the following fields.
a. Banks
b. Healthcare
C. Education
d. Entertainment
Answers
Answer:
1) Every computer is composed of two basic components: hardware and software. hardware includes the Physical features, which are every part that you can either see or touch, for example: monitor, case, keyboard, mouse, and printer.
2)The characteristics of computers that have made them so powerful and universally useful are speed, accuracy, diligence, versatility and storage capacity. Let us discuss them briefly. Computers work at an incredible speed. A powerful computer is capable of performing about 3-4 million simple instructions per second.
3)This method provides details of the hard drive(s) of the notebook PC using Disk Management in the Computer Management tool.
Click Start and then Run.
Type compmgmt. msc and click Ok.
Under Storage, click Disk Management. The drive capacity is listed under capacity.
4)a.Literally, OCR stands for Optical Character Recognition. It is a widespread technology to recognise text inside images, such as scanned documents and photos. OCR technology is used to convert virtually any kind of images containing written text (typed, handwritten or printed) into machine-readable text data
b.electronic processes including personal identification, access control, authentication, and financial transactions. Smart card readers obtain or “read” this type of data. These easy-to-install devices read the data that is stored on contact or contactless 13.56 MHz smart cards.
c.A 3D printer is a computer-aided manufacturing (CAM) device that creates three-dimensional objects. Like a traditional printer, a 3D printer receives digital data from a computer as input. However, instead of printing the output on paper, a 3D printer builds a three-dimensional model out of a custom material
5)a.Computers are found in offices, banks, schools, businesses and in the every field. They are used in banks for record keeping and maintaining accounts of customers. ... The banks provide ATM card facility to the customer for draw money from any ATM Machine, it has been possible due to the computerized system
b.Computers are used in hospital management system, patient history, CT Scan, X-ray, ECG, other medical tests, monitoring and diagnosis purpose
c.Computers are used in Computer Aided Learning (CAL), distance learning, online classes and online examinations. Computers are used in teaching and research. The students can solve so many problems through computer. Students can get different information related to their subjects on computer
d.Computers are playing important role for the entertainment of human beings. People can watch TV programs, shows, movies, on internet. People can play games online, listening music and many more entertainment is available on internet