Test: Introduction to Computer- 2 - Class 10 MCQ

Answer: B. Tabulating Machine
Explanation: The Tabulating Machine, invented by Herman Hollerith, used punched cards to process data for the 1890 census. It was the first electromechanical machine designed for data processing, significantly speeding up the census data tabulation process.

Answer: C. Microcomputer
Explanation: Microcomputers, including desktops and laptops, are widely used in educational institutions for tele-education, virtual classrooms, and online classes, enhancing the learning experience for students.

Answer: D. All of the above
Explanation: Digital computers generally offer higher speed, accuracy, and larger storage capacity compared to analog computers. They process data in binary form, which allows for precise calculations and efficient data storage and retrieval.

Answer: B. EDSAC
Explanation: EDSAC (Electronic Delay Storage Automatic Calculator) was the first computer to provide storage capacity for instructions and data in memory. It was an early British computer that laid the foundation for modern computing.

Answer: D. Secrecy
Explanation: Computers enhance security through login systems with password protection, ensuring that only authorized users can access sensitive information. This feature is crucial for applications like online banking and personal data management.

Answer: B. Performing X-rays and telemedicine
Explanation: In the healthcare sector, computers are used for various applications such as performing X-rays, telemedicine, patient monitoring, maintaining patient records, and diagnosing medical conditions, thereby improving the quality of healthcare services.

Answer: D. Fourth Generation
Explanation: The fourth generation of computers, which began around 1972, introduced microprocessor technology. Microprocessors are integrated circuits that contain all the functions of a central processing unit (CPU) on a single chip, leading to the development of smaller, more powerful, and affordable computers.

Answer: C. Microcomputer
Explanation: Microcomputers are commonly used in banks for tasks such as maintaining customer account records, managing transactions, and providing online banking services. Their affordability and versatility make them suitable for these applications.

Answer: C. They solve a single, dedicated type of problem
Explanation: Special-purpose computers are designed to solve a single, dedicated type of problem. Examples include computers used for automatic aircraft landing systems, multimedia applications, and other specific tasks.

Answer: C. UNIVAC
Explanation: UNIVAC (Universal Automatic Computer), invented in 1951, was the first general-purpose electronic computer with a large amount of input and output. It was capable of handling both numeric and textual data and used magnetic tapes for data storage and retrieval.