However , the electricity generated was still low . we had to resort to the use of a small , low - power microprocessor board having only a 4 - kb memory ( 4 , 000 bytes ) , which was several 10 , 000ths of the memory available in today s personal computers 但畢竟所產生的電力依然偏低,為勢所逼下需要選用只有一小塊線路板、耗電量低的電腦,記憶體僅有4kb (四千字節) ,相等于現時個人電腦的幾萬分之一。