card system的意思|示意

Card system, also known as the card punch system, is a business system that uses coded cards to store and process data. Card systems were widely used in the 1950s and 1960s for large business data processing applications.

Card systems use punch cards for data input, storage and output. Cards have rows and columns of holes and use standardized coding systems. Data is punched into the cards by computer operators. Each card can represent a single record, such as a customer, employee or order. The punched cards can then be used to store the data in a central database, or to run data processing applications.

Card systems are often used for personnel management, inventory control, banking, accounting and payroll. They are also used for industrial process control, automation of production operations, and for scientific and engineering data processing.

The advantage of card systems is that they are relatively inexpensive and easy to program and use. They also provide very fast data input and output, as well as reliable data storage.

The disadvantages of card systems are that they are very slow compared to modern technology. They also may require a large amount of hardware and energy, thus increasing the cost of maintenance. Additionally, they can be difficult to debug and maintain after programming.

Card systems are still used today in many fields. For example, punch cards are used in some music production equipment, as well as in some voting systems and automated industrial processes. They are also sometimes used for data entry in business applications and for data processing in scientific laboratories.