100. Abbreviations

A personal computer (PC) is a type of computer designed for individual use, typically in homes, schools, or offices. It includes a central processing unit (CPU), memory, storage, and input devices like a keyboard and mouse. Personal computers are used for a variety of tasks, such as browsing the internet, creating documents, playing games, and managing files. They run software applications that perform different functions, making them versatile tools for both work and entertainment.

Mathematics is the study of numbers, quantities, shapes, and patterns. It includes various fields like arithmetic, algebra, geometry, and calculus, all of which are used to solve problems and explain relationships between different elements. Mathematics is essential in everyday life and is widely applied in areas such as science, engineering, economics, and technology.

A whiteboard is a smooth, shiny, white surface used for writing or drawing with special markers that can be easily wiped off. It is commonly used in classrooms, meeting rooms, and other places where information is shared or discussed. The surface allows dry-erase markers to leave marks that can be erased without leaving permanent stains, making it reusable. Whiteboards are usually mounted on walls or placed on stands, making them easy to see and convenient for presenting or organizing ideas. They can also be used for interactive displays in some cases.

A gymnasium is a type of secondary school that provides an academically rigorous curriculum, often preparing students for higher education. Gymnasiums focus on subjects like languages, mathematics, and sciences and are known for their emphasis on preparing students for university or specialized higher education programs. They offer a higher level of academic challenge compared to other types of secondary schools.

A television (TV) is a device used to receive and display broadcasted or streamed video and audio content. It allows viewers to watch shows, movies, news, and other programming on a screen. Televisions come in various sizes and types, including traditional cathode ray tube (CRT) models, flat-panel LCD and LED screens, and advanced 4K and OLED displays. Modern televisions often include features such as internet connectivity for streaming services, smart TV capabilities for accessing apps, and high-definition resolution for clearer, more detailed images.

Influenza, commonly known as the flu, is a contagious respiratory illness caused by influenza viruses. It typically presents with symptoms such as fever, cough, sore throat, runny or stuffy nose, body aches, headache, fatigue, and sometimes vomiting or diarrhea. Influenza spreads when an infected person talks, coughs, or sneezes, releasing saliva or mucus, as well as by touching contaminated surfaces and then touching the face. Most people recover from the flu without complications, but it can lead to severe illness or death, particularly in high-risk groups such as young children, older adults, pregnant women, and individuals with underlying health conditions. Vaccination is the best way to prevent influenza and its potentially serious complications.

A laboratory is a controlled environment where scientific experiments, research, and practical learning activities are conducted. It is equipped with tools, instruments, and materials needed for conducting tests, measurements, or experiments. Laboratories are commonly found in schools, colleges, and universities, especially in subjects such as science, chemistry, biology, and physics. They allow students and researchers to apply theoretical knowledge in hands-on experiments, fostering a deeper understanding of scientific principles and processes.