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Parallel Port Programming

Parallel port basics:

In computers, ports are used mainly for two reasons: Device control and communication. We can program PC’s Parallel ports for both. Parallel ports are mainly meant for connecting the printer to the PC. But we can program this port for many more applications beyond that.

Parallel ports are easy to program and faster compared to the serial ports. But main disadvantage is it needs more number of transmission lines. Because of this reason parallel ports are not used in long distance communications. Let us know the basic difference between working of parallel port and serial port. In serial ports, there will be two data lines: One transmission and one receive line. To send a data in serial port, it has to be sent one bit after another with some extra bits like start bit, stop bit and parity bit to detect errors. But in parallel port, all the 8 bits of a byte will be sent to the port at a time and a indication will be sent in another line. There will be some data lines, some control and some handshaking lines in parallel port. If three bytes of data 01000101 10011100 10110011 is to be sent to the port, following figures will explain how they are sent to the serial and parallel ports respectively. We can understand why parallel port communication is faster compared to that of serial.

Parallel port basics:

In computers, ports are used mainly for two reasons: Device control and communication. We can program PC’s Parallel ports for both. Parallel ports are mainly meant for connecting the printer to the PC. But we can program this port for many more applications beyond that.

Parallel ports are easy to program and faster compared to the serial ports. But main disadvantage is it needs more number of transmission lines. Because of this reason parallel ports are not used in long distance communications. Let us know the basic difference between working of parallel port and serial port. In serial ports, there will be two data lines: One transmission and one receive line. To send a data in serial port, it has to be sent one bit after another with some extra bits like start bit, stop bit and parity bit to detect errors. But in parallel port, all the 8 bits of a byte will be sent to the port at a time and a indication will be sent in another line. There will be some data lines, some control and some handshaking lines in parallel port. If three bytes of data 01000101 10011100 10110011 is to be sent to the port, following figures will explain how they are sent to the serial and parallel ports respectively. We can understand why parallel port communication is faster compared to that of serial.

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Lesson 1

Motherboard, Processor and Memory form the main components of a computer system

Motherboard is the main circuit board of a computer. It contains connectors and ports for attaching additional boards and peripheral devices. It has multiple controller chips on the motherboard to control standard devices such as keyboard, disk drive, etc. All the controller chips together are called as chipset.

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Hiren’s BootCD 9.4 download

Active Partition Recovery 3.0

To Recover a Deleted partition.

Active Uneraser 3.0

To recover deleted files and folders on FAT and NTFS systems.

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Hiren’s BootCD 9.2 download

Partition Magic Pro 8.05

Best software to partition hard drive

Acronis Disk Director Suite 9.0.554

Popular disk management functions in a single suite

Paragon Partition Manager 7.0.1274

Universal tool for partitions

Hiren’s BootCD 9.2 download

Partition Commander 9.01

The safe way to partition your hard drive,with undo feature

Ranish Partition Manager 2.44

a boot manager and hard disk partitioner.

The Partition Resizer 1.3.4

move and resize your partitions in one step and more.

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PC Mainboard Identification

Every now and then, we see questions in the PC911 Forum regarding identification of the mainboard installed in a PC. Many users simply don’t know the make and model of the mainboard (motherboard or mobo) that their systems are built around. Does this really matter? No … not unless and until something goes wrong where you need that info to effect a repair. Or, until you decide to perform some DIY system upgrade and suddenly you need to know something specific about the board.
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How to burn a ISO Image using Nero Burning ROM

You will need:
(1) A ISO Image you wish to burn to CD
(2) A blank CD
(3) A copy of Nero Burning ROM

Step 1

Start Nero Burning ROM

Step 2

Select “Burn Image” from the “Recorder” menu

Step 3

Select “Image files (*.nrg, *.iso, *.cue)”.
Select your iso file

Step 4

From here it’s like any other CD. Click on “Burn”

After few minutes your cd is ready to use

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