DVAC stands for Electronic Discrete Variable Automatic Computer. It was one of the earliest electronic computers and was designed to overcome some limitations of its predecessor, ENIAC.
🔍 What is EDVAC?
Full Form: Electronic Discrete Variable Automatic Computer
Developed By: J. Presper Eckert and John Mauchly
Development Started: 1944
Completed: Around 1949
Type: Binary, stored-program computer
Memory: Mercury delay line memory
Location: University of Pennsylvania
Purpose: General-purpose computing (especially military and scientific use)
🧠 Key Features of EDVAC
Stored Program Concept:
Unlike ENIAC, EDVAC was one of the first computers to implement the stored-program concept (suggested by John von Neumann).
This means that instructions and data were both stored in memory, enabling the machine to be reprogrammed easily.
Binary System:
Used binary number system instead of decimal like ENIAC.
Binary is more efficient for electronic computers.
Serial Processing:
Processed instructions and data in a serial fashion (one at a time), reducing complexity in circuits.
Memory:
Used mercury delay line memory, a form of serial-access memory.
Improved Efficiency:
Faster, more reliable, and more flexible than ENIAC.
🏗️ Major Components of EDVAC
| Component | Function |
|---|---|
| Input Unit | Receives data and instructions (usually via punched tapes). |
| Central Control Unit | Directs operations and sequence of instructions. |
| Arithmetic Unit | Performs calculations using binary arithmetic. |
| Memory Unit | Stores both data and program (using delay lines). |
| Output Unit | Displays or prints results. |
⚖️ Advantages of EDVAC
Introduced the stored program architecture, which is now standard.
Used binary system, simplifying hardware.
More flexible and easier to reprogram.
Faster and more reliable than earlier computers.
🛠️ Disadvantages of EDVAC
Still large and power-hungry compared to modern systems.
Used mercury delay lines, which were complex and not very durable.
Limited memory and speed by today’s standards.
What is EDVAC in Hindi
- EDVAC का पूरा नाम Electronic Discrete Variable Automatic Computer (इलेक्ट्रॉनिक डिस्क्रीट वेरिएबल ऑटोमैटिक कंप्यूटर) है।
- यह पहली ऐसी मशीन थी जो पूरी तरीके से program को स्टोर करती थी।
- साथ ही साथ यह पहला ऐसा device था जिसमें computer game को run किया गया था।
- इस मशीन पर सबसे पहले square number की table और prime number की list को calculate किया गया था।
- यह पहला मेनफ्रेम कंप्यूटर था जो दशमलव प्रणाली के बजाय बाइनरी सिस्टम का इस्तेमाल करता था.
- इसका अविष्कार 1940 के दशक में J. Presper Eckert और John Mauchly ने Pennsylvania की यूनिवर्सिटी में किया था।
- EDVAC में चुम्बकीय टेप का इस्तेमाल किया जाता था जिसके कारण यह दिनभर में 20 घण्टे तक चल सकता था।
- यह 5.5 kb की मेमोरी क्षमता के साथ गणितीय कार्यों को पूरा करता था।
- EDVAC को हिंदी में इलेक्ट्रॉनिक असतत परिवर्तनीय स्वचालित कंप्यूटर कहते है।