"机械工业出版社计算机专业英语第三版课后答案汇总及习题参考解析"

Computers are machines that can be programmed to perform arithmetic or logical operations automatically. Modern computers typically consist of a central processing unit (CPU) and memory. Hardware refers to the tangible physical components of a computer, such as circuits, computer chips, graphic cards, sound cards, and memory (RAM). According to Text A, a computer is a machine that can be instructed to carry out sequences of arithmetic or logical operations automatically through computer programming. A modern computer typically includes at least one processing element, such as a central processing unit (CPU), and some form of memory. Hardware refers to all the tangible physical components of a computer, such as circuits, computer chips, graphic cards, sound cards, and memory (RAM). In the answers to the exercises in Unit 1, it is evident that a computer is a complex machine with various components that work together to perform tasks efficiently and effectively. The CPU, which is the central processing unit, plays a crucial role in executing instructions and managing data. Memory, including RAM, is essential for storing and accessing data quickly. Hardware components like circuits, computer chips, graphic cards, and sound cards contribute to the overall functionality of a computer. Overall, computers are essential tools in today's digital world, enabling individuals and organizations to perform a wide range of tasks efficiently and effectively. Understanding the components and functionality of a computer is crucial for anyone working in the field of computer science or technology.