SCN889 The first instruction commands the disk controller to begin reading the disk from the current disk address into the current memory address. Set the switches to 0030 (Octal address 30), depress the Load Address switch. Many computers had controls, e.g., buttons, dials, keyboards, toggle switches, for entering addresses, controls for displaying the data at an address and controls for altering storage contents. Next the operator would enter the value intended for that address. The programmer could read and alter register contents, change program instructions or data in memory or force a branch to another section of code.|Karena Tanggapan yang Terkesan Buruk Ini