ict2_1.pdf - www.amar-kotha.com/ict wØZxq Aa¨vq †WUv KwgDwb‡Kkb I Kw¤úDUvi †bUIqvK© wm‡jevm †WUv KwgDwb‡Kkb wm‡÷g t KwgDwb‡Kkb

ict2_1.pdf - www.amar-kotha.com/ict wØZxq Aa¨vq †WUv...

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1 wØZxq Aa¨vq †WUv KwgDwb‡Kkb I Kw¤úDUvi †bUIqvK © wm‡jevm __________________________________________________ †WUv KwgDwb‡Kkb wm‡÷g t KwgDwb‡Kkb wm‡÷‡gi avibv, †WUv KwgDwb‡Kk‡bi avibv, e¨vÛ DBW &_ &, †WUv U ªvÝwgkb †g_W, †WUv U ªvÝwgkb †gvW| †WUv KwgDwb‡Kkb gva¨g t Zvi gva¨g, †Kv-Gw·qvj, U zB‡÷W †cqvi, AcwUK¨vj dvBevi| Zviwenxb gva¨g t Bbd«v‡iW, †iwWI I‡qf, gvB‡μvI‡qf| Iq¨vi‡jm KwgDwb‡Kkb wm‡÷g t Iq¨vi‡jm KwgDwb‡Kk‡bi cÖ‡qvRbxqZv, e ø y- U z_, IqvB-dvB, IqvB-g¨v·| †gvevBj †hvMv‡hvM t wewfboe cÖR‡b¥i †gvevBj| Kw¤úDUvi †bUIqvwK©s t †bUIqv‡K ©i avibv, †bUIqv‡K©i D‡Ïk¨, †bUIqv‡K©i c ÖKvi‡f` / Kvh©vewj| †bUIqv‡K©i wWfvBm t g‡Wg, nve, ivDUvi, †MUI‡q, m yBP, NIC , †bUIqv‡K ©i KvR, †bUIqvK© U‡cvjwR, K¬vDW Kw¤úDwUs Gi aviYv, K¬vDW Kw¤úDwUs Gi m yweav|
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2 Communication System ( †hvMv‡hvM e¨e¯ ’v ) GK cÿ n‡Z Ab¨ c‡ÿ †Kvb gva¨‡gi Øviv Z_¨ c Öev‡ni c Öwμqv‡K †hvMv‡hvM ejv nq| †h e¨w³ wb‡Ri wPš Ív fvebv I e³e¨ Ab¨‡`i‡K Rvbv‡bvi Rb¨ Zv‡`i Kv‡Q cvwV‡q w`j wZwb n‡jb †c ÖiYKvix (c Ö_g cÿ)| †h e¨w³ †c ÖiYKvixi KvQ †_‡K Z_¨wU M ÖnY Ki‡jv Ges †m Ab yhvqx mvov w`j wZwb n‡j M ÖnYKvix (wØZxq cÿ)| †hvMv‡hvM c Öwμqvq e³v hv e‡j‡Q †m Z_¨wU ûeû M ÖnYKvixi Kv‡Q †c uŠQv‡Z nq| M ÖnYKvix hw` e³vi c ÖwZ †Kvb ai‡bi mvov w`‡Z e¨_ © nq Z‡e †m †hvMv‡hvM‡K AKvh©Ki I Am¤ú~Y © e‡j MY¨ Kiv nq| Data Communication (Z_¨ †hvMv‡hvM) †h c Öwμqvq data †Kvb GKwU computer/system n‡Z Ab¨ †Kvb GK ev GKvwaK computer/system- G network -Gi mvnv‡h¨ ¯ ’vbvš Íi Kiv nq Zv‡K Data Communication e‡j| Source (Drm)t †h system/device n‡Z data †c ÖiY Kiv nq Zv‡K Source e‡j| Computer, telephone, mobile BZ¨vw` data- Gi source wn‡m‡e KvR K‡i _v‡K| Transmitter (†c ÖiK)t Data -†K ` ~ieZ ©x ¯ ’v‡b ev wbw` ©ó ¯ ’v‡b †c Öi‡Yi Rb¨ modulation -Gi c Ö‡qvRb nq| Digital data- †K analog signal- G iƒcvš ÍwiZ Kivi c Öwμqv‡K modulation e‡j| Avi modulation -Gi KvRwUB Transmitter As‡k m¤úboe nq| NIC (Network Interfacing Card), modem BZ¨vw` transmitter wn‡m‡e KvR K‡i _v‡K| Medium (gva¨g)t Data GK ¯ ’vb n‡Z Ab¨ ¯ ’v‡b †c Öi‡Yi Rb¨ Medium- Gi c Ö‡qvRb nq| Avi GB medium n‡Z cv‡i Zvih y³ A_ev Zviwenxb| Zvih medium- Gi g‡a¨ i‡q‡Q telephone line, optical fiber, co- axial cable BZ¨vw`| Avi Zviwenxb medium- Gi g‡a¨ i‡q‡Q radio wave, micro wave, satellite BZ¨vw`| Receiver (c ÖvcK)t Data hLb wbw` ©ó Mš ͇e¨ †cŠ‡Q ZLb Zv‡K demodulation Ki‡Z nq| Analog signal- †K digital data- G iƒcvš ÍwiZ Kivi c Öwμqv‡K demodulation e‡j| Avi demodulation -Gi KvRwUB receiver As‡k m¤úboe nq| NIC (Network Interfacing Card), modem BZ¨vw` receiver wn‡m‡e KvR K‡i _v‡K| Destination (Mš Íe¨)t hvi D‡Ï‡k¨ data †c ÖwiZ nq Zv‡K Destination e‡j| Computer, telephone, mobile BZ¨vw` data- Gi destination
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