diff --git a/Aulas/04-Algebra.pdf b/Aulas/04-Algebra.pdf
new file mode 100755
index 00000000..67103d7a
Binary files /dev/null and b/Aulas/04-Algebra.pdf differ
diff --git a/Aulas/05-Transistores.pdf b/Aulas/05-Transistores.pdf
new file mode 100755
index 00000000..8effb2b0
Binary files /dev/null and b/Aulas/05-Transistores.pdf differ