Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Ọ bụ C. B. Mirick chepụtara ihe e ji achịkwa ụgbọala nke nwere akụkụ abụọ n'ụlọ ọrụ United States Naval Research Laboratory (NRL) ma nweta ikike ya n'afọ 1926 (U.S. Patent no. 1,597,416)". NRL na-arụsi ọrụ ike n'ịzụlite ụgbọ elu na-achịkwa n'oge ahụ na joystick nwere ike iji kwado mgbalị a. Na patent e nyere ya, Mirick na-ede, sị: "Usoro njikwa m bụ nke a pụrụ iji mee ihe karịsịa n'ịkwọ ụgbọelu na-enweghị onye na-anya ụgbọelu. "Ndị Germany mepụtara ọkpụkpọ egwuregwu eletrik abụọ n'ihe dị ka afọ 1944. A na-eji ngwaọrụ ahụ dịka akụkụ nke ndị Germany Funkgerät FuG 203 Kehl sistemụ nnyefe redio na-eji ụfọdụ ụgbọ elu bọmbụ German, nke a na-eji na-eduzi ma roket-boosted anti-ship missile Henschel Hs 293, na unpowered pioneer precision-guided munition Fritz-X, megide oke osimiri na ihe ndị ọzọ. N'ebe a, onye na-arụ ọrụ ji mkpịsị mkpịsị nke onye na-ezipụ Kehl mee ihe iji duzie mgbọ ogbunigwe ahụ na ebumnuche ya. Ogwe njikwa a nwere ihe ndị na-agbanye ma na-agbanyụ kama inwe ihe mmetụta analog. Ma Hs 293 na Fritz-X jiri FuG 230 Straßburg na-anabata redio na ha iji zipu akara akara nke Kehl na mpaghara nchịkwa nke ngwá agha. E jiri otu joystick yiri nke ahụ mee ihe maka mgboagha ndị America na-achịkwa nke oge a, iji mee ka mgboagha ahụ na-aga n'ihu na axis yaw naanị. Onye otu ndị ọkà mmụta sayensị gbakọtara na Heeresversuchsanstalt na Peenemünde. N'ebe a, otu akụkụ nke ìgwè na-arụ ọrụ n'ihe omume rọketi nke Germany nọ na-arụpụta rọketi Wasserfall, nke dịgasị iche n'ụgbọ rọketi V-2, bụ́ rọketi mbụ e ji alụ agha site n'ala gaa n'ikuku. Ngwá ọrụ na-eduzi Wasserfall gbanwere mgbaàmà eletrik ahụ ịbụ mgbaàmà redio ma zigara ha na rọketi ahụ.  Ajụjụ: Olee ụdị ihe ndị a na-ejikarị ngwá agha ahụ eme?
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