Design of Variable Bit-Width Arithmetic Unit Using Single Flux Quantum Device. - Iori Ishikawa; Ikki Nagaoka; Ryota Kashima; Koki Ishida; Kosuke Fukumitsu; Keitaro Oka; Masamitsu Tanaka; Satoshi Kawakami; Teruo Tanimoto; Takatsugu Ono; Akira Fujimaki; Koji Inoue (ISCAS, 2022)