SYSTEMS DEVELOPMENT ANALYSIS
WHY IS SYSTEM ANALYSIS IMPORTANT
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
Creating data
|
|
|
Creating good input forms
|
|
|
Creating user dialogues between external entities
|
|
|
Creating dialogues between internal processes
|
Detailed explanation-1: -I/O Structure consists of Programmed I/O, Interrupt driven I/O, DMS, CPU, Memory, External devices, these are all connected with the help of Peripheral I/O Buses and General I/O Buses.
Detailed explanation-2: -I/O module stands for Input/Output module, which is a device that acts as the connective bridge between a computer system at one end and an I/O or peripheral device of some kind at the other, such as a printer, webcam or scanner.
Detailed explanation-3: -I/O device operates asynchronously with CPU, interrupts CPU when finished. The advantage to this method is that every instruction which can access memory can be used to manipulate an I/O device. Memory mapped IO is used for most high-speed I/O devices like disks, communication interfaces.
Detailed explanation-4: -The I/O subsystem of a computer provides an efficient mode of communication between the central system and the outside environment. It handles all the input-output operations of the computer system. Input or output devices that are connected to computer are called peripheral devices.