 
 <prompt> text: ```International standard ISO 7736 define one standard size for car audio head units and enclosures. The standard bin originally established by the German standards body "Deutsches Institut für Normung" as DIN 75490, and e dey commonly referred to as the "DIN car radio size". Dem adopt am as international standard for 1984.

Head units dey usually come as either "single DIN" (180 x 50 mm panel) or "double DIN" (180 x 100 mm panel) size. The depth no dey standardized; as a result, some cars like Opel Manta / Ascona get the correct sized front aperture but no go fit accommodate plenty DIN sized radios apart from the original because of the shallow depth; this even though the vehicle dey manufactured as late as 1988. The US standard for a DIN radio na 7" x 2" (although the actual 180 mm width fit convert to something like 7-3/32" so most people dey use 7-1/8" to allow for clearance) and the Double DIN sized radio na 7" x 4". Some radios for Japanese Kei cars no dey conform to the DIN standard sha.

To remove the unit, na pair of U-shaped devices dem dey often use. The devices dey inserted for the two pairs of holes, for either end of the stereo fascia, the action wey dey release the unit from the mounting and provide a pair of handles to pull the unit free. These tools dey vary from manufacturer to manufacturer. Becker dey use a pair of key-shaped removal tools, with one hole each. Often a set of thin screwdrivers fit work just as well.

Now, provide a numbered list of answers to these questions:

1. Wetin be the car audio head unit standard wey dem adopt?
2. E dey internationally recognized?
3. Which country create the standardization?
4. Which organization, specifically?
5. Wetin dem commonly refer the standard to?
6. And its formal/technical name?
7. Wetin the international standard dey known as today?
8. How many sizes dey commonly used?
9. Wetin dem be?
10. Wetin be the US standard?
11. Wetin about the double DIN size?
12. Which area cars no dey use this standard?
13. Which cars dem be?
14. Wetin tools fit allow you remove a head unit?
15. Dem dey universally identical?
16. If you no get access to those tools, wetin else you fit use?
17. How many holes the Becker style of tool dey use?

Numbered answers:``` <response>: ```1. for 1984
2. yes
3. Germany
4. "Deutsches Institut für Normung"
5. "DIN car radio size"
6. DIN 75490
7. International standard ISO 7736
8. two
9. "single DIN" (180 x 50 mm panel) or "double DIN" (180 x 100 mm panel) size.
10. 7" x 2"
11. 7" x 4"
12. Japan's
13. Kei
14. a pair of U-shaped devices
15. no
16. a set of thin screwdrivers
17. one hole on each pair``` 