1. قسم الحاسوب

ماهي وحدات الإدخال والإخراج معاً

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ما هي وحدات الإدخال والإخراج معاً

وحدات الإدخال والإخراج معاً

يوجد بعض الأجهزة التي تعمل كوحدة إدخال وإخراج معاً في جهاز الحاسوب، أي هي وحدات إدخال وإخراج في نفس الوقت.

ومن الأمثلة على وحدات الإدخال والإخراج معاً هي:

1- شاشة اللمس Touch Screen

تتميز بأنها تظهر المخرجات للمستخدم على الشاشة، ويتم استخدامها أيضاً لإدخال البيانات عن طريق اللمس، مثل بعض أجهزة الصراف الآلي (ATM Machines).

2- المودم Modem

المودم اختصار لـ Modulation Demodulationبمعنى التضمين وفك التضمين.
وهو عبارة عن جهاز وسيط بين الحاسوب وخط الهاتف، يعمل على تحويل الإشارات (التماثلية/ Analogue) إلى رقمية/ Digital) وبالعك مما يساعدك على بث الرسائل والملفات الرقمية عبر الهاتف من جهاز إلى آخر.

والمودم نوعان: (داخلي/ Internal) على شكل بطاقة، و (خارجي/ External) على شكل جهاز مستقل يوصل بجهاز الحاسوب.

وتقاس سرعة المودم -أي السرعة التي يتم بها نقل البيانات- بـ البت/ ثانية (Bits Per Second (BPS)، أو بما يسمى Baud Rate.

الحصول على نظرة عامة حول وحدات الإدخال (IU) التي يجب أن تتعرف عليها.

الحصول على نظرة عامة حول وحدات الإخراج (OU) التي يجب أن تتعرف عليها.

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