3- Designers create projects with a CAD or a solid modeling program.
4- A CAM program plans machining operations.
5- A post-processor converts the data into a set of instructions.
6- Machine tolls shape the finished product.
7- All work flow is controlled by a computer.
IX Rewrite the sentences into passive
Example: Product designers made projects on paper. ─ Projects were made on paper.
1. Designers use a CAD program.
A CAD program …….
2. Experts can view new designs.
New designs ………………
3. You must send design files to a rapid modeling device.
Design files ………..
4. A post-processor converts the data into a set of instructions.
The data …..
5. CNC controls the machine tools.
The machine tools ………….
6. Designers redid their work faster.
The work ………..
7. The machine tools shaped and finished the product.
The product ……………….
XI Fill the gaps to compare computers now and ten years ago. Use the adjectives in brackets
Computers today are more powerful (powerful). They operate _____1 (fast) and they have much _________2 (large) memories. Because they contain more electronics, the cases have become _______3 (big) but the flat-screen monitors are _______4 (heavy) and fit into a _______ 5 (small) spaces on your desk. Computers are also _________6 (cheap).The price is ________7 (low) now than in the past. The programs too are ________8 (good). They are _______9 (sophisticated) and you can work much ______10 (efficiently).