PS/2

PS/2 is a port and interface standard developed by IBM in the 1980s for connecting keyboards and mouse devices to personal computers, particularly the IBM PS/2 line of computers. The standard was widely adopted by other manufacturers, including Dell, HP, and Compaq, and became a common feature on many PCs. The development of the PS/2 standard was influenced by the work of Microsoft and Intel, and it played a significant role in the evolution of the PC industry. The standard was also supported by AMD and NVIDIA, among other companies.

Introduction

The PS/2 standard was introduced in 1987, as part of the IBM PS/2 line of computers, which included the IBM PS/2 Model 30 and the IBM PS/2 Model 50. The standard was designed to provide a more reliable and efficient way of connecting keyboards and mice to PCs, compared to the earlier AT and XT standards. The PS/2 standard was also influenced by the work of Apple and Sun Microsystems, and it shared some similarities with the ADB and Sun keyboard standards. The development of the PS/2 standard involved collaboration between IBM, Microsoft, and Intel, as well as other companies, including Western Digital and Seagate Technology.

History

The development of the PS/2 standard was a response to the growing need for more reliable and efficient input devices for PCs. In the early 1980s, IBM and other manufacturers were using a variety of different standards, including the AT and XT standards, which were not always compatible with each other. The PS/2 standard was designed to provide a more universal and reliable way of connecting keyboards and mice to PCs, and it quickly gained widespread adoption. The standard was supported by Microsoft Windows and MS-DOS, as well as other operating systems, including OS/2 and Linux. The PS/2 standard also influenced the development of other standards, including the USB standard, which was developed by Intel, Microsoft, and IBM in the 1990s.

Technical Specifications

The PS/2 standard specifies a 6-pin mini-DIN connector, which is used to connect keyboards and mice to PCs. The standard also defines a set of communication protocols, which are used to transmit data between the input device and the PC. The PS/2 standard supports a data transfer rate of up to 40 kHz, and it uses a synchronous serial communication protocol. The standard is also compatible with a range of different input devices, including keyboards, mouse devices, and trackballs. The development of the PS/2 standard involved the work of National Semiconductor and Texas Instruments, among other companies.

Connectors and Interfaces

The PS/2 standard uses a 6-pin mini-DIN connector, which is smaller than the earlier AT and XT connectors. The connector is designed to be more reliable and easier to use than earlier connectors, and it has become a standard feature on many PCs. The PS/2 standard also defines a set of interfaces, which are used to connect input devices to PCs. The standard is compatible with a range of different interfaces, including the ISA and PCI interfaces. The development of the PS/2 standard involved collaboration between IBM, Intel, and Microsoft, as well as other companies, including 3Com and Cirrus Logic.

Devices and Compatibility

The PS/2 standard is compatible with a range of different input devices, including keyboards, mouse devices, and trackballs. The standard is also compatible with a range of different PCs, including desktop computers and laptops. The PS/2 standard has been widely adopted by manufacturers, including Dell, HP, and Compaq, and it has become a common feature on many PCs. The standard is also supported by Microsoft Windows and MS-DOS, as well as other operating systems, including OS/2 and Linux. The development of the PS/2 standard involved the work of Logitech and Microsoft, among other companies.

Legacy and Replacements

The PS/2 standard has been largely replaced by the USB standard, which was developed in the 1990s. The USB standard offers a number of advantages over the PS/2 standard, including faster data transfer rates and greater compatibility with a range of different devices. However, the PS/2 standard is still widely used, particularly in older PCs and in certain industrial and commercial applications. The development of the PS/2 standard influenced the development of other standards, including the FireWire and Bluetooth standards. The PS/2 standard also played a significant role in the evolution of the PC industry, and it remains an important part of the history of personal computers, along with the work of Steve Jobs and Bill Gates. Category:Computer hardware