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Ede4ka [16]
3 years ago
13

HTTP is made to facilitate which kind of communication?

Computers and Technology
1 answer:
vlada-n [284]3 years ago
5 0

Answer:

Computer to computer.

Explanation:

HTTP facilitates the connection between websites, so the answer is computer to computer.

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Your search google for recipe for tonight dinner is an.example of ?​
Rina8888 [55]

The example is, ethier you need cooking classes or you wish to try something new

Hope the little humor helps

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3 years ago
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What is the binary number 0011 0011 multiplied by two?
Nimfa-mama [501]

Answer:

1100110

Explanation:

0011 0011 = 51

51 x 2 = 102

5 0
3 years ago
Discuss the DMA process​
shusha [124]

Answer:

Direct memory access (DMA) is a process that allows an input/output (I/O) device to send or receive data directly to or from the main memory, bypassing the CPU to speed up memory operations and this process is managed by a chip known as a DMA controller (DMAC).

Explanation:

A defined portion of memory is used to send data directly from a peripheral to the motherboard without involving the microprocessor, so that the process does not interfere with overall computer operation.

In older computers, four DMA channels were numbered 0, 1, 2 and 3. When the 16-bit industry standard architecture (ISA) expansion bus was introduced, channels 5, 6 and 7 were added.

ISA was a computer bus standard for IBM-compatible computers, allowing a device to initiate transactions (bus mastering) at a quicker speed. The ISA DMA controller has 8 DMA channels, each one of which associated with a 16-bit address and count registers.

ISA has since been replaced by accelerated graphics port (AGP) and peripheral component interconnect (PCI) expansion cards, which are much faster. Each DMA transfers approximately 2 MB of data per second.

A computer's system resource tools are used for communication between hardware and software. The four types of system resources are:

  •    I/O addresses
  •    Memory addresses.
  •    Interrupt request numbers (IRQ).
  •    Direct memory access (DMA) channels.

DMA channels are used to communicate data between the peripheral device and the system memory. All four system resources rely on certain lines on a bus. Some lines on the bus are used for IRQs, some for addresses (the I/O addresses and the memory address) and some for DMA channels.

A DMA channel enables a device to transfer data without exposing the CPU to a work overload. Without the DMA channels, the CPU copies every piece of data using a peripheral bus from the I/O device. Using a peripheral bus occupies the CPU during the read/write process and does not allow other work to be performed until the operation is completed.

With DMA, the CPU can process other tasks while data transfer is being performed. The transfer of data is first initiated by the CPU. The data block can be transferred to and from memory by the DMAC in three ways.

In burst mode, the system bus is released only after the data transfer is completed. In cycle stealing mode, during the transfer of data between the DMA channel and I/O device, the system bus is relinquished for a few clock cycles so that the CPU can perform other tasks. When the data transfer is complete, the CPU receives an interrupt request from the DMA controller. In transparent mode, the DMAC can take charge of the system bus only when it is not required by the processor.

However, using a DMA controller might cause cache coherency problems. The data stored in RAM accessed by the DMA controller may not be updated with the correct cache data if the CPU is using external memory.

Solutions include flushing cache lines before starting outgoing DMA transfers, or performing a cache invalidation on incoming DMA transfers when external writes are signaled to the cache controller.

4 0
3 years ago
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Which computer applications can Mr. Crowell use to make the classroom learning more stimulating and interesting? Mr. Crowell has
katovenus [111]

Answer:

He can use following computer program to make the class room more interesting and effective:-

  • 1. <u>Reference software</u> : This software help students to access the atlases and dictionaries.Teacher can include this software in research projects .

  • 2. <u>Educational Games</u>: This types of software is very effective for younger children because it motivates them to learn.This software companies have combined gaming and education into one .

  • 3. <u>Graphical software</u> : Student can use this software to create and changes images available on the internet itselfs .
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3 years ago
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Write the interface (.h file) of a class Counter containing: A data member counter of type int. A data member named counterID of
OlgaM077 [116]

Explanation:

See the attached image for The interface (.h file) of a class Counter

8 0
3 years ago
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