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The Happy Hacking Keyboard (HHKB) is a small computer keyboard produced by PFU Limited of Japan, codeveloped with Japanese computer scientist and pioneer Eiiti Wada. [1] Its reduction of keys from the common 104-key layout down to 60 keys in the professional series is the basis for it having smaller overall proportions, yet full-sized keys.
It consisted of a small USB keyboard, several prototype booklets, a case, a Raspberry Pi 1, and an SD card loaded with an early version of the Raspbian OS. All 200 prototypes released were sold. [2] In 2014, the firm launched the Kano Computer Kit, an educational computer kit to teach hardware assembly and basic programming skills. [3]
A wireless keyboard must have a transmitter built in, and a receiver connected to the computer's keyboard port; it communicates either by radio frequency (RF) or infrared (IR) signals. A wireless keyboard may use industry standard Bluetooth radio communication, in which case the receiver may be built into the computer.
A pointing stick on a mid-1990s-era Toshiba laptop. The two buttons below the keyboard act as a computer mouse: the top button is used for left-clicking while the bottom button is used for right-clicking. Optical pointing sticks are also used on some Ultrabook tablet hybrids, such as the Sony Duo 11, ThinkPad Tablet and Samsung Ativ Q.
The keyboard sends the key code to the keyboard driver running in the main computer; if the main computer is operating, it commands the light to turn on. All the other indicator lights work in a similar way. The keyboard driver also tracks the shift, alt and control state of the keyboard.
This was meant to be a visual indication that the AlphaSmart 3000 was a USB native device, as many other USB devices were patterned using the iMac's design in the same way. Designers removed the ADB and PS/2 ports, replacing them with a USB port and a mini-DIN-8 serial port. Also new was the SmartApplet architecture that was capable of ...