If the computer is started in the following state, what will its final state be; and what, if an rint? Note that many of the values in RAM are random. 06 16 21 721 721 821 731 731 IR IC Card Reader: 686 06 500 792 722 906 522 452 13 03 T8 23 ACC 600 | 621 121 |822 128 129 14 04 09 19 24 683206 522 322 906 327 413 15 05 10 20 25 |018|013563 213 563 | 06 16 21 Clear & add

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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### Computer State Analysis and Interpretation

#### Initial State of the Computer's Memory:

**Memory Addresses (RAM contents):**
```
01: 721   06: 792   11: 621   16: 522   21: 018
02: 721   07: 722   12: 121   17: 322   22: 013
03: 821   08: 906   13: 822   18: 906   23: 563
04: 731   09: 522   14: 128   19: 327   24: 213
05: 731   10: 452   15: 129   20: 413   25: 563
```

#### Register State:

- **Instruction Register (IR):** 686
- **Instruction Counter (IC):** 06
- **Accumulator (ACC):** 683206

#### Card Reader Input:
- 500
- 600

#### Operation Codes:
- Clear & Add: 1
- Add: 2
- Subtract: 3
- Store: 4
- Multiply: 5
- Divide: 6
- Read: 7
- Print: 8
- Transfer Unconditionally: 9
- Transfer on Minus: 0

### Analysis Question:

- **Task:** Determine the final state of the system and any printed output, while bearing in mind that many values in RAM are random.

**Interpretation:**

The instruction set suggests a simple computer system capable of basic arithmetic, data storage, and program control tasks. The memory addresses contain a mix of data and possibly instructions.

**Execution Process:**

1. **Read Initial Instruction:** 
   - IR set to 686, likely a divide operation involving specific memory addresses or register values.
   
2. **Process:** 
   - Depending on the program logic and instruction, this involves performing arithmetic or control operations (e.g., read from or store to memory, manage control flow using transfers).

3. **Use of Card Reader:**
   - Input values (500, 600) potentially used in calculations or conditions handled by the computer program.

4. **Control Flow:**
   - Transfers might redirect program execution (e.g., unconditional or conditional based on accumulator value).

### Expected Outcomes:

-
Transcribed Image Text:### Computer State Analysis and Interpretation #### Initial State of the Computer's Memory: **Memory Addresses (RAM contents):** ``` 01: 721 06: 792 11: 621 16: 522 21: 018 02: 721 07: 722 12: 121 17: 322 22: 013 03: 821 08: 906 13: 822 18: 906 23: 563 04: 731 09: 522 14: 128 19: 327 24: 213 05: 731 10: 452 15: 129 20: 413 25: 563 ``` #### Register State: - **Instruction Register (IR):** 686 - **Instruction Counter (IC):** 06 - **Accumulator (ACC):** 683206 #### Card Reader Input: - 500 - 600 #### Operation Codes: - Clear & Add: 1 - Add: 2 - Subtract: 3 - Store: 4 - Multiply: 5 - Divide: 6 - Read: 7 - Print: 8 - Transfer Unconditionally: 9 - Transfer on Minus: 0 ### Analysis Question: - **Task:** Determine the final state of the system and any printed output, while bearing in mind that many values in RAM are random. **Interpretation:** The instruction set suggests a simple computer system capable of basic arithmetic, data storage, and program control tasks. The memory addresses contain a mix of data and possibly instructions. **Execution Process:** 1. **Read Initial Instruction:** - IR set to 686, likely a divide operation involving specific memory addresses or register values. 2. **Process:** - Depending on the program logic and instruction, this involves performing arithmetic or control operations (e.g., read from or store to memory, manage control flow using transfers). 3. **Use of Card Reader:** - Input values (500, 600) potentially used in calculations or conditions handled by the computer program. 4. **Control Flow:** - Transfers might redirect program execution (e.g., unconditional or conditional based on accumulator value). ### Expected Outcomes: -
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