The correct answer is: D. All of the above
A way to transfer programs to a central system is:
- By setting bit switches on the central CPU. This is a method of programming early computers that involved setting switches on the front panel of the computer to enter instructions.
- To copy the program into PROMs and install the PROMs in the system. PROMs (programmable read-only memories) are chips that can be programmed once and then read only. They are often used to store firmware, which is the software that controls the hardware of a device.
- To develop the program on the actual system only. This is the most common way to transfer programs to a central system. The program is developed on the system that it will be used on, and then it is transferred to the system using a variety of methods, such as a floppy disk, a USB drive, or a network connection.
It is important to note that not all of these methods are appropriate for all programs. For example, setting bit switches on the central CPU is a very low-level method that is not appropriate for most programs. However, it can be useful for debugging programs or for making changes to the program’s code.
PROMs are a more permanent way to store programs. Once a program has been written to a PROM, it cannot be changed without erasing the PROM and rewriting it. This makes PROMs a good choice for programs that need to be secure or that need to be stored for a long period of time.
Developing the program on the actual system is the most common way to transfer programs. This is because it allows the programmer to test the program on the system that it will be used on. This can help to identify any problems with the program before it is used in production.
In conclusion, there are a variety of ways to transfer programs to a central system. The best method depends on the specific program and the needs of the programmer.