local stores in neighborhood do not have computerized cash registers but they may have cameras if they are in a bad neighborhood. inventory is controlled by checking the shelves.
the Qs about computers, servers and clients are for national chain stores. they use clients at each store which are connected to the central servers at HQ. employees need special training as the system is complicated. the whole system is maintained by their IT department.
You can setup a network by itself for a computer Laboratory. The requirements are simply: computers, network cables, switches, softwares, and IP addresses. Computer engineers can also compute these computers with detailed users' access and restrictions. You can run only the required applications dedicated for this purpose. You can also define rules and policy in the computer Lab where we can restrict unnecessary sites.
Answer:
Software is a collection of instructions that tell a computer how to work. This is in contrast to hardware, from which the system is built and actually performs the work.
Answer:
The design of products, devices, services, or environments taking into ... algorithm. A list of steps to finish a task. ... The two options used in your binary code. ... Finding and fixing problems in an algorithm or program. ... When you write code for an event handler, it will be executed every time that event or action occurs.