Rịba ama amaokwu a dị n'okpuru ma zaa ajụjụ ahụ mgbe e mesịrị n'otu asụsụ ahụ dị ka amaokwu ahụ:  Passage: Na Jenụwarị 1981, MOS Technology, Inc., Commodore's integrated circuit design subsidiary, bidoro oru ngo iji chepụta eserese na mgbawa ọdịyo maka ọgbọ egwuregwu vidiyo na-esote. A rụchara ọrụ imewe maka ibe, aha ya bụ MOS Technology VIC-II (Video Integrated Circuit for graphics) na MOS Technology SID (Sound Interface Device for audio), na Nọvemba 1981. Commodore wee bido ọrụ egwuregwu egwuregwu nke ga-eji ibe ọhụrụ akpọrọ Ultimax ma ọ bụ Commodore MAX Machine, nke Yash Terakura sitere na Commodore Japan rụpụtara. Emechara kagbuo ọrụ a mgbe e mepụtara naanị igwe ole na ole maka ahịa ndị Japan. N'otu oge ahụ, Robert "Bob" Russell (onye mmemme usoro na onye na-ese ihe na VIC-20) na Robert "Bob" Yannes (onye injinia nke SID) na-akatọ usoro ngwaahịa dị ugbu a na Commodore, nke bụ n'ihu nke Commodore PET akara ezubere maka ndị ọrụ azụmaahịa. Site na nkwado nke Al Charpentier (onye injinia nke VIC-II) na Charles Winterble (onye njikwa nke MOS Technology), ha tụrụ aro ka Commodore CEO Jack Tramiel bụrụ ezigbo ihe na-efu na VIC-20. Tramiel kwuru na igwe ahụ kwesịrị inwe 64 KB nke ebe nchekwa na-enweghị usoro (RAM). Ọ bụ ezie na 64-Kbit dynamic random-access memory (DRAM) ibe na-efu ihe karịrị US $ 100 (nke ya na $ 232.95 na 2018) n'oge ahụ, ọ maara na ọnụahịa DRAM na-ada, ọ ga-adaba na ọkwa a na-anabata tupu mmepụta zuru ezu. Ndị otu ahụ nwere ike ịmepụta kọmputa ahụ ngwa ngwa n'ihi na, n'adịghị ka ọtụtụ ụlọ ọrụ kọmputa ndị ọzọ, Commodore nwere ụlọ ọrụ semiconductor nke ya iji mepụta mgbawa ule; n'ihi na ụlọ ọrụ ahụ anaghị arụ ọrụ zuru oke, mmepe mmepe bụ akụkụ nke ụlọ ọrụ dị ugbu a. A rụchara ibe ndị ahụ na Nọvemba, oge nke Charpentier, Winterble, na Tramiel kpebiri ịga n'ihu na kọmputa ọhụrụ ahụ; nke ikpeazụ setịpụrụ oge ikpeazụ maka izu ụka mbụ nke Jenụwarị, iji kwekọọ na 1982 Consumer Electronics Show (CES). Ngwaahịa ahụ bụ koodu aha ya bụ VIC-40 dị ka onye nọchiri VIC-20 a ma ama. Ihe ahụ...  Ajụjụ: Gịnị ka RAM pụtara?
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