 
 <prompt> How earliest computers dey work? Given di last question, write one context wey get di answer. E fit be 1 - 20 sentences. Context: <response>: Early digital computers na electromechanical; electric switches dey drive mechanical relays to do calculation. Dis devices get low speed and later dem come replace am with faster all-electric computers, wey originally dey use vacuum tubes. The Z2, wey German engineer Konrad Zuse create for 1939, na one of the earliest examples of an electromechanical relay computer. 