A PLC ( Programmable Logic Controller) is a ruggedized computer used for industrial automation. These controllers can automate a specific process. Learn about configuration, programming, implementation, and more.
is a PIC (Programmable Interrupt Controller) with advanced interrupt management. It was developed by Intel and replaces the 8259 interrupt controllers. APIC is necessary for dual processing or multiple-processor support and has been available since the original Intel Pentium. However, the motherboard...
The PIC is expected to catch this trigger and service the interrupt. IRQ levels are allocated to devices to indicate their identities. For example, in a PC, IRQ0 through IRQ15 denote the 16 levels associated with the mouse, keyboard, serial port, sound card, floppy disk controller, and ...
PLC (Programmable Logic Controller) has many features similar to our personal computer at home. They both have a power supply unit, a CPU (Central Processing Unit), Inputs & Outputs (I/O) ports, RAM and ROM memory, and control software. The biggest difference between the two is PLC can...
capability. The hardware interrupt can be configured to be triggered off in the event of a negative and/or positive edge to the bit. More information about the individual digital input modules is available in the manual "Programmable Logic Controller S7-400 Module Data" in Entry ID:1117740in ...
Multitasking. IRQs enable multitasking by allowing the CPU to handle multiple tasks simultaneously. When a device generates an interrupt, it signals the CPU to temporarily halt its current task and switch to the interrupt handler. Once the interrupt is processed, the CPU resumes its previous task....
A kernel interacts with the rest of the operating system, including the application layer and the device layer, and with components such as the CPU and memory. They typically have a monolithickernelandmicrokernel architecture. The OS kernel is the core of the operating system that provides basic...
Programmable Interrupt Controller(PIT): In the next stage BIOS checks the PIT to ensure that all interrupt requests are handled correctly. Cache Controller:Finally,thecache controller is tested by the BIOS. If POST detects any problem at this point, the issue can be caused by a faulty controlle...
Advanced Programmable Interrupt Controller (APIC).This variation sends an interrupt signal to the APIC to notify the processor when a device is prepared to send data. Direct memory access (DMA).DMAbypasses the CPU to send data commands from peripherals to main memory. DMA is the replacement for...
A network interface card, or NIC, is a circuit board installed in a computer that allows it to connect to a network. It's also known as a network interface controller, a network adapter, or alocal area networkadapter. NICs facilitate communication between a computer and a network by transla...