From 838560ecf715ff2a92308e0794d426828c604568 Mon Sep 17 00:00:00 2001
From: yenru0 <yenru0604@gmail.com>
Date: Mon, 15 Sep 2025 12:44:06 +0900
Subject: [PATCH] initial commit

---
 .gitattributes |  3 +++
 .gitignore     |  2 ++
 3.md           | 34 ++++++++++++++++++++++++++++++++++
 build.py       |  0
 pdf/L1.pdf     |  3 +++
 pdf/L2.pdf     |  3 +++
 pdf/L3.pdf     |  3 +++
 7 files changed, 48 insertions(+)
 create mode 100644 .gitattributes
 create mode 100644 .gitignore
 create mode 100644 3.md
 create mode 100644 build.py
 create mode 100644 pdf/L1.pdf
 create mode 100644 pdf/L2.pdf
 create mode 100644 pdf/L3.pdf

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..cb7db3a
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+[attr]lfs-file filter=lfs diff=lfs merge=lfs -text
+
+"*.pdf" filter=lfs diff=lfs merge=lfs -text
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d48c759
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+.idea
+.vscode
\ No newline at end of file
diff --git a/3.md b/3.md
new file mode 100644
index 0000000..9fc988a
--- /dev/null
+++ b/3.md
@@ -0,0 +1,34 @@
+# ARM
+
+ARM based chips
+
+## ARM Processor Architecture
+
+* based on RISC
+  * fixed length inst.
+  * load-store arch
+    * memory-to-register load inst.
+    * register-to-memory store inst.
+  * large uniform register file
+  * 32bit arch(v1-v7), 64bit arch(v8-v9)
+  * good performance/power
+
+## ARM Processor Family
+
+```python { cmd matplotlib hide }
+
+import pymupdf
+
+from PIL import Image
+
+doc = pymupdf.open("./pdf/L3.pdf")
+
+pix = doc[6].get_pixmap()
+img = Image.frombytes("RGB", [pix.width, pix.height], pix.samples)
+plt.axis('off')
+plt.subplots_adjust(left=0, right=1, top=1, bottom=0)
+plt.imshow(img)
+
+plt.show()
+
+```
diff --git a/build.py b/build.py
new file mode 100644
index 0000000..e69de29
diff --git a/pdf/L1.pdf b/pdf/L1.pdf
new file mode 100644
index 0000000..e1e78e0
--- /dev/null
+++ b/pdf/L1.pdf
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e753f50f827ebeec13ab41596e8283e5b1f2ef2340c0f6420d2c603206eb0cab
+size 650457
diff --git a/pdf/L2.pdf b/pdf/L2.pdf
new file mode 100644
index 0000000..1a4e160
--- /dev/null
+++ b/pdf/L2.pdf
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:3d882fbfba6a6447506465bff53d7c616b8148a2afb6b237f139beda402cafcb
+size 1586440
diff --git a/pdf/L3.pdf b/pdf/L3.pdf
new file mode 100644
index 0000000..9bd8da5
--- /dev/null
+++ b/pdf/L3.pdf
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:674d64362dea6ce5fa81275b54a3449136ed2ee9a04c7770f14d4e4ec2e6e16c
+size 2252136