सर्किट बोर्ड, संगणक, प्रतिरूप, कैलकुलेटर, ब्लॉक चेन, मुद्रित सर्किट बोर्ड, अभिलेख, प्रणाली, संचार, तंत्र, डेटा ब्लॉक
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