TASK	TASK TIME (SECONDS)	TASKS THAT MUST PRECEDE
1. Assemble Cover.	76	None
2. Install LCD in Cover.	56	Task 1
3. Prepare Base Assembly.	22	None
4. Install M-PCB in Base.	34	Task 3
5. Install CPU.	21	Task 4
6. Install Backup Batteries and Test.	46	Task 4
7. Install Accupoint Pointing Device and Wrist Rest.	32	Task 4
8. Install Speaker and Microphone.	44	Task 4
9. Install Auxiliary Printed Circuit Board (A-PCB) on M-PCB.	27	Task 4
10. Prepare and Install Keyboard.	24	Task 9
11. Prepare and Install Solid-State Drive (SSD).	52	Task 10
12. Install Battery Pack.	7	Task 11
13. Insert Memory Card.	3	Task 12
14. Start Software Load.	9	Tasks 2, 5, 6, 7, 8, 13
15. Software Load.	291	Task 14
16. Test Video Display.	54	Task 15
17. Test Keyboard.	66	Task 16

Exhibit 6.9: Engineers' initial design of the assembly line

ASSEMBLY LINE POSITION	TASKS	WORKSTATION NUMBER	LABOR TIME (SECONDS)
1	1. Assemble Cover. (76)	1	76
2	2. Install LCD in cover. (56)	2	56 + 22 = 78
	3. Prepare Base Assembly. (22)
3	4. Install Main Printed Circuit Board (M-PCB) in Base. (34)	3	34 + 21 + 46 = 101
	5. Install CPU .(21)
	6. Install Backup Batteries and Test. (46)
4	7. Install Accupoint Pointing Device and Wrist Rest. (32)	4	32 + 44 + 27 = 103
	8. Install Speaker and Microphone. (44)
	9. Install Auxiliary Printed Circuit Board (A-PCB) on M-PCB. (27)
5	10. Prepare and Install Keyboard. (24)	5	24 + 52 + 7 + 3 + 9 = 95
	11. Prepare and Install Solid-State Drive (SSD). (52)
	12. Install Battery Pack. (7)
	13. Insert Memory Card. (3)
	14. Start Software Load. (9)
6	15. Software Load (120)
7	15. Software Load (120)
8	15. Software Load (51)
9	16. Test Video Display. (54)	6	54 + 66 = 120
	17. Test Keyboard. (66)
10	Empty.
11	Empty.
12	Empty.

1. What is the daily capacity of the assembly line designed by the engineers? Assume that the assembly line has a computer at every position when it is started at the beginning of the day. (Do not round intermediate calculations. Round down your answer to the next smallest integer.) 2. When the assembly line designed by the engineers is running at maximum capacity, what is the efficiency of the line relative to its use of labor? Assume that the supporter is not included in efficiency calculations. (Round your answer to 2 decimal places.) 3. If the line were to be redesigned to operate at the initial 230 units per day target, assuming that no overtime will be used, what would be the maximum allowable cycle time? Develop an assembly line using the fewest possible workstations for the allowable cycle time (HINT: use the longest task time rule for assigning the tasks). What would be the efficiency of the new design? (Round your "Efficiency" answer to 2 decimal places. Round down "maximum cycle time" values to the next smallest integer.) 4. What about running the line at 312 units per day? If overtime were used with the engineers initial design, how much overtime would be needed each day? (Round your answer to 1 decimal place.) 5. If the assembly line is to be redesigned to operate at 312 units per day without using overtime , what is the maximum cycle time to meet this production rate? (Round down "maximum cycle time" values to the next smallest integer.) 6. Develop an assembly line layout with the fewest possible assembly line positions and the fewest possible workstations with labor to produce 312 units per day without using overtime (HINT: use the longest task time rule for assigning the tasks). What is the efficiency of this new assembly line layout? (Round your answer to 2 decimal places.)