update README.md

README.md

@@ -2,14 +2,14 @@
 
 A distributed calculator system built with gRPC and multiple programming languages. This project demonstrates microservices architecture with three independent services communicating via gRPC.
 
-## 📋 Prerequisites
+## Prerequisites
 
 - **Python 3.11+** (Client Gateway)
 - **Go 1.21+** (Addition Service) 
 - **Node.js 18+** (Multiplication Service)
 - **Protocol Buffers Compiler (protoc)**
 
-## 🚀 Quick Start
+## Quick Start
 
 ### 1. Clone the repository
 ```bash
@@ -64,25 +64,52 @@ cd distributed-calculator
 - **Input:**
   ```
   Choose option: 1
-  Enter operation (add/multiply): add
-  Enter first number: 5
+  Enter first number: 2
   Enter second number: 3
   ```
 
+- **Output 1:**
+  ```
+  Distributed Calculator System
+  1. Perform calculations
+  2. Show operation history
+  3. Exit
+  Choose option: 1
+  Enter first number: 2
+  Enter second number: 3
+  Addition: 2 + 3 = 5
+  Multiplication: 2 × 3 = 6
+  ```
+
+- **Input 2:**
+  ```
+  Choose option: 2
+  ```
+
 - **Output:**
   ```
-  Result: 8
+  Distributed Calculator System
+  1. Perform calculations
+  2. Show operation history
+  3. Exit
+  Choose option: 2
+
+  Fetching operation history...
+
+  Addition Operation History:
+    [Timestamp]: 2 + 3 = 5
+
+  Multiplication Operation History:
+    [Timestamp]: 2 × 3 = 6
   ```
 
-- **Input:**
+- **Input 3:**
   ```
-  Choose option: 1
-  Enter operation (add/multiply): multiply
-  Enter first number: 4
-  Enter second number: 6
+  Choose option: 3
   ```
 
 - **Output:**
   ```
-  Result: 24
+  Choose option: 3
+  Goodbye!
   ```

addition-service/operation_log.txt

 [2025-11-12 00:52:05] ADDITION: 9 + 5 = 14
 [2025-11-12 00:52:24] ADDITION: 5 + 4 = 9
 [2025-11-12 00:52:34] ADDITION: -10 + 5 = -5
+[2025-11-12 01:31:16] ADDITION: 2 + 3 = 5

multiplication-service/operation_log.txt

 [2025-11-11T21:52:06.101Z] MULTIPLICATION: 9 × 5 = 45
 [2025-11-11T21:52:24.672Z] MULTIPLICATION: 5 × 4 = 20
 [2025-11-11T21:52:34.994Z] MULTIPLICATION: -10 × 5 = -50
+[2025-11-11T22:31:17.055Z] MULTIPLICATION: 2 × 3 = 6