Computer System Structure Crossword Puzzle

QUESTIONS LIST: direct memory access : assigns the task of outputting data to a dma controller rather than generating an interrupt every time data needs output, traps : occurs when the cpu detects an error or an exceptional condition during the execution of a program, boot up : is the process initiated when a computer system is powered on or restarted, auxiliary storage : also known as secondary memory. saves data on a more permanent basis, programmed : _ i/o - data is moved from the user space to the kernel to facilitate the i/o operation efficiently, primary memory : it temporarily holds data and instructions that are actively used by the cpu, interrupts : signals sent by hardware devices to the cpu to gain its attention, speed : is one of the criteria in choosing storage device, defines how fast the device is in providing access to data, capacity : is one of the criteria in choosing storage device, defines how much data can it store, cost : is one of the criteria in choosing storage device, deals with the practicality of acquiring such device.