설정 > 개인설정 > 작업 표시줄의 검색 설정에 대한 접근성을 일부 수정했습니다. A USB Host shield which allows an Arduino board to communicate with a USB device such as a keyboard or a mouse There is also a threading tool, named Protothreads. Protothreads are described as "extremely lightweight stackless threads https://intern.ee.aeust.edu.tw/home.php?mod=space&uid=1315770