Parallel and Series Ports

In: Computers and Technology

Submitted By cmas
Words 906
Pages 4
Video Summary 1
Topics covered in the videos 1.07, 1.09 and 1.11 * Ports * Connectors * Monitors * Video buses * Troubleshooting * Printers
Ports
* Serial ports transmit data 1 bit at a time. They are usually male and have 9-25 pins. * Parallel ports transmit data 8 bits at a time and are generally female with 25 pins. * Game ports have 15 pins laid out in two rows (female). * Video monitors have 15 pins but are laid in three rows (male)
Connectors
* Early mice used a serial connector and keyboards used a 5 pin DIN connector. * Modern mice and keyboards use a PS/2 technology which is a much smaller 6 pin DIN connector or a USB or wireless connection. * NIC- Network Interface card uses a RJ-45 connector. * The NIC is responsible for connecting a computer to local and distant networks or the internet. * It also converts parallel communication used by the motherboard system into serial communication used by the network cable.
Modem, Video and USB * It is the slowest possible way of connecting to the internet. * Its standard speed is 56Kbps although v.92 standard supports faster speed. * They are responsible for converting the analog signal from the phone line into a digital format a computer can use. * It also converts the digital signal back to analog when sending a transmission. They connect using a RJ-11 connector. * Modern computers come with two types of video ports , the VGA (analog interface) D-type, 15pins, 3 rows and the DVI (digital visual interface) * USB- Universal Serial Bus are hot swappable. USB1 transmit at 12Mbps and are 3meters in length. USB2 transmit at 480Mbps they are 5meters in length. * Around 125 – (127 maximum) devices can be plugged into the computer. * SCSI connectors come in different sizes. The type A 50 pin narrow SCSI and the type P 68 pin…...

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