diff --git a/20210114/pull-down-widerstand.png b/20210114/pull-down-widerstand.png
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index 0000000000000000000000000000000000000000..3bb39aba9aef4c9e20af37078c00c65395347e7c
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diff --git a/20210114/pull-up-kurzschluss.png b/20210114/pull-up-kurzschluss.png
new file mode 100644
index 0000000000000000000000000000000000000000..c46e8af0f82ae804b3533d5d9f790125ee330a31
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diff --git a/20210114/pull-up-pull-down-widerstaende.xcf.gz b/20210114/pull-up-pull-down-widerstaende.xcf.gz
new file mode 100644
index 0000000000000000000000000000000000000000..6de47102589e3bf76089bc42397388183d077ac3
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diff --git a/20210114/pull-up-widerstand-intern.png b/20210114/pull-up-widerstand-intern.png
new file mode 100644
index 0000000000000000000000000000000000000000..b30258e23cb31aef227e982a7911f5fc7223d8c7
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diff --git a/20210114/pull-up-widerstand.png b/20210114/pull-up-widerstand.png
new file mode 100644
index 0000000000000000000000000000000000000000..cce8f393763a0364d793953295b5b9322f288681
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diff --git a/20210121/alignment-1.c b/20210121/alignment-1.c
new file mode 100644
index 0000000000000000000000000000000000000000..815b4562a8f1c4aac3dac5ff3ddc3f5452bbaee7
--- /dev/null
+++ b/20210121/alignment-1.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main (void)
+{
+ uint8_t a = 42;
+ uint16_t b = 1117;
+ uint8_t c = 23;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+}
diff --git a/20210121/alignment-2.c b/20210121/alignment-2.c
new file mode 100644
index 0000000000000000000000000000000000000000..23de308c39c5f7301c7c8b90c0078a003de21bd0
--- /dev/null
+++ b/20210121/alignment-2.c
@@ -0,0 +1,14 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main (void)
+{
+ uint8_t a = 42;
+ uint16_t b = 1117;
+ uint8_t c = 23;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+ a = 0;
+ b = 0;
+ c = 0;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+}
diff --git a/20210121/alignment-3.c b/20210121/alignment-3.c
new file mode 100644
index 0000000000000000000000000000000000000000..6a7dd0a3c8debd1fdc0e06912d0895820c08311c
--- /dev/null
+++ b/20210121/alignment-3.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main (void)
+{
+ uint8_t a = 42;
+ uint16_t b = 1117;
+ uint8_t c = 23;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+ uint32_t *p = &a;
+ *p = 0;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+}
diff --git a/20210121/alignment-4.c b/20210121/alignment-4.c
new file mode 100644
index 0000000000000000000000000000000000000000..e073043765778ba75a1a002b5e86a672f1e03cea
--- /dev/null
+++ b/20210121/alignment-4.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main (void)
+{
+ uint8_t a = 42;
+ uint16_t b = 1117;
+ uint8_t c = 23;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+ uint32_t *p = (uint32_t *) &a;
+ *p = 0;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+}
diff --git a/20210121/alignment-5-32.s b/20210121/alignment-5-32.s
new file mode 100644
index 0000000000000000000000000000000000000000..d4df40706c2e1e59bd3c15f2df1cba1bebafb722
--- /dev/null
+++ b/20210121/alignment-5-32.s
@@ -0,0 +1,83 @@
+ .file "alignment-5.c"
+ .text
+ .section .rodata
+.LC0:
+ .string "a = %d, b = %d, c = %d\n"
+ .text
+ .globl main
+ .type main, @function
+main:
+.LFB0:
+ .cfi_startproc
+ leal 4(%esp), %ecx
+ .cfi_def_cfa 1, 0
+ andl $-16, %esp
+ pushl -4(%ecx)
+ pushl %ebp
+ .cfi_escape 0x10,0x5,0x2,0x75,0
+ movl %esp, %ebp
+ pushl %ebx
+ pushl %ecx
+ .cfi_escape 0xf,0x3,0x75,0x78,0x6
+ .cfi_escape 0x10,0x3,0x2,0x75,0x7c
+ subl $16, %esp
+ call __x86.get_pc_thunk.bx
+ addl $_GLOBAL_OFFSET_TABLE_, %ebx
+ movb $42, -17(%ebp) # #include <stdio.h>
+ movw $1117, -10(%ebp) # #include <stdint.h>
+ movb $23, -11(%ebp) #
+ movzbl -11(%ebp), %ecx # int main (void)
+ movzwl -10(%ebp), %edx # {
+ movzbl -17(%ebp), %eax # uint8_t a = 42;
+ movzbl %al, %eax # uint16_t b = 1117;
+ pushl %ecx # uint8_t c = 23;
+ pushl %edx # printf ("a = %d, b = %d, c = %d\n", a, b, c);
+ pushl %eax # uint64_t *p = (uint64_t *) &a;
+ leal .LC0@GOTOFF(%ebx), %eax # *p = 0;
+ pushl %eax # printf ("a = %d, b = %d, c = %d\n", a, b, c);
+ call printf@PLT # }
+ addl $16, %esp
+ leal -17(%ebp), %eax
+ movl %eax, -16(%ebp)
+ movl -16(%ebp), %eax
+ movl $0, (%eax)
+ movl $0, 4(%eax) # -9 \ b
+ movzbl -11(%ebp), %ecx # -10 / -.
+ movzwl -10(%ebp), %edx # -11 - c |
+ movzbl -17(%ebp), %eax # -12 |
+ movzbl %al, %eax # -13 } auf 0 gesetzt
+ pushl %ecx # -14 |
+ pushl %edx # -15 |
+ pushl %eax # -16 |
+ leal .LC0@GOTOFF(%ebx), %eax # -17 - a -'
+ pushl %eax
+ call printf@PLT
+ addl $16, %esp
+ movl $0, %eax
+ leal -8(%ebp), %esp
+ popl %ecx
+ .cfi_restore 1
+ .cfi_def_cfa 1, 0
+ popl %ebx
+ .cfi_restore 3
+ popl %ebp
+ .cfi_restore 5
+ leal -4(%ecx), %esp
+ .cfi_def_cfa 4, 4
+ ret
+ .cfi_endproc
+.LFE0:
+ .size main, .-main
+ .section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
+ .globl __x86.get_pc_thunk.bx
+ .hidden __x86.get_pc_thunk.bx
+ .type __x86.get_pc_thunk.bx, @function
+__x86.get_pc_thunk.bx:
+.LFB1:
+ .cfi_startproc
+ movl (%esp), %ebx
+ ret
+ .cfi_endproc
+.LFE1:
+ .ident "GCC: (Debian 8.3.0-6) 8.3.0"
+ .section .note.GNU-stack,"",@progbits
diff --git a/20210121/alignment-5.c b/20210121/alignment-5.c
new file mode 100644
index 0000000000000000000000000000000000000000..913c5c8a81eedddf8463acee10262875bd6c84d7
--- /dev/null
+++ b/20210121/alignment-5.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+#include <stdint.h>
+
+int main (void)
+{
+ uint8_t a = 42;
+ uint16_t b = 1117;
+ uint8_t c = 23;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+ uint64_t *p = (uint64_t *) &a;
+ *p = 0;
+ printf ("a = %d, b = %d, c = %d\n", a, b, c);
+}
diff --git a/20210121/answer-32.s b/20210121/answer-32.s
new file mode 100644
index 0000000000000000000000000000000000000000..d8649e6678dfed4bb2abeb06533fa123c195c861
--- /dev/null
+++ b/20210121/answer-32.s
@@ -0,0 +1,68 @@
+ .file "answer.c"
+ .text
+ .section .rodata.str1.1,"aMS",@progbits,1
+.LC0:
+ .string "%d\n"
+ .text
+ .globl main
+ .type main, @function
+main:
+.LFB11:
+ .cfi_startproc
+ leal 4(%esp), %ecx
+ .cfi_def_cfa 1, 0
+ andl $-16, %esp
+ pushl -4(%ecx)
+ pushl %ebp
+ .cfi_escape 0x10,0x5,0x2,0x75,0 # #include <stdio.h>
+ movl %esp, %ebp #
+ pushl %ebx # int answer = 23;
+ pushl %ecx #
+ .cfi_escape 0xf,0x3,0x75,0x78,0x6 # int main (void)
+ .cfi_escape 0x10,0x3,0x2,0x75,0x7c # {
+ call __x86.get_pc_thunk.bx # answer += 19;
+ addl $_GLOBAL_OFFSET_TABLE_, %ebx # printf ("%d\n", answer);
+ movl answer@GOTOFF(%ebx), %eax # return 0;
+ addl $19, %eax # }
+ movl %eax, answer@GOTOFF(%ebx)
+ subl $8, %esp
+ pushl %eax
+ leal .LC0@GOTOFF(%ebx), %eax
+ pushl %eax
+ call printf@PLT
+ addl $16, %esp
+ movl $0, %eax
+ leal -8(%ebp), %esp
+ popl %ecx
+ .cfi_restore 1
+ .cfi_def_cfa 1, 0
+ popl %ebx
+ .cfi_restore 3
+ popl %ebp
+ .cfi_restore 5
+ leal -4(%ecx), %esp
+ .cfi_def_cfa 4, 4
+ ret
+ .cfi_endproc
+.LFE11:
+ .size main, .-main
+ .globl answer
+ .data
+ .align 4
+ .type answer, @object
+ .size answer, 4
+answer:
+ .long 23
+ .section .text.__x86.get_pc_thunk.bx,"axG",@progbits,__x86.get_pc_thunk.bx,comdat
+ .globl __x86.get_pc_thunk.bx
+ .hidden __x86.get_pc_thunk.bx
+ .type __x86.get_pc_thunk.bx, @function
+__x86.get_pc_thunk.bx:
+.LFB12:
+ .cfi_startproc
+ movl (%esp), %ebx
+ ret
+ .cfi_endproc
+.LFE12:
+ .ident "GCC: (Debian 8.3.0-6) 8.3.0"
+ .section .note.GNU-stack,"",@progbits
diff --git a/20210121/answer.c b/20210121/answer.c
new file mode 100644
index 0000000000000000000000000000000000000000..2da5fc39c50955e3ac5588d12fa1ca6d9ac949eb
--- /dev/null
+++ b/20210121/answer.c
@@ -0,0 +1,10 @@
+#include <stdio.h>
+
+int answer = 23;
+
+int main (void)
+{
+ answer += 19;
+ printf ("%d\n", answer);
+ return 0;
+}
diff --git a/20210121/answer.disassemble b/20210121/answer.disassemble
new file mode 100644
index 0000000000000000000000000000000000000000..d5682bdc46f53067217941a2fdc00d082637b515
--- /dev/null
+++ b/20210121/answer.disassemble
@@ -0,0 +1,16 @@
+(gdb) disassemble /r main
+Dump of assembler code for function main:
+ 0x0000000000001135 <+0>: 48 83 ec 08 sub $0x8,%rsp
+ 0x0000000000001139 <+4>: 8b 05 f1 2e 00 00 mov 0x2ef1(%rip),%eax # 0x4030 <answer>
+ 0x000000000000113f <+10>: 8d 70 13 lea 0x13(%rax),%esi
+ 0x0000000000001142 <+13>: 89 35 e8 2e 00 00 mov %esi,0x2ee8(%rip) # 0x4030 <answer>
+ 0x0000000000001148 <+19>: 48 8d 3d b5 0e 00 00 lea 0xeb5(%rip),%rdi # 0x2004
+ 0x000000000000114f <+26>: b8 00 00 00 00 mov $0x0,%eax
+ 0x0000000000001154 <+31>: e8 d7 fe ff ff callq 0x1030 <printf@plt>
+ 0x0000000000001159 <+36>: b8 00 00 00 00 mov $0x0,%eax
+ 0x000000000000115e <+41>: 48 83 c4 08 add $0x8,%rsp
+ 0x0000000000001162 <+45>: c3 retq
+End of assembler dump.
+
+ ^^^^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^^^^^^^^^^
+ Maschinensprache Assembler
diff --git a/20210121/answer.s b/20210121/answer.s
new file mode 100644
index 0000000000000000000000000000000000000000..69cf9a26f4abc713b067f4231c831f80fd3a7e31
--- /dev/null
+++ b/20210121/answer.s
@@ -0,0 +1,35 @@
+ .file "answer.c"
+ .text
+ .section .rodata.str1.1,"aMS",@progbits,1
+.LC0:
+ .string "%d\n"
+ .text
+ .globl main
+ .type main, @function
+main:
+.LFB11:
+ .cfi_startproc
+ subq $8, %rsp
+ .cfi_def_cfa_offset 16 # #include <stdio.h>
+ movl answer(%rip), %eax #
+ leal 19(%rax), %esi # int answer = 23;
+ movl %esi, answer(%rip) #
+ leaq .LC0(%rip), %rdi # int main (void)
+ movl $0, %eax # {
+ call printf@PLT # answer += 19;
+ movl $0, %eax # printf ("%d\n", answer);
+ addq $8, %rsp # return 0;
+ .cfi_def_cfa_offset 8 # }
+ ret
+ .cfi_endproc
+.LFE11:
+ .size main, .-main
+ .globl answer
+ .data
+ .align 4
+ .type answer, @object
+ .size answer, 4
+answer:
+ .long 23
+ .ident "GCC: (Debian 8.3.0-6) 8.3.0"
+ .section .note.GNU-stack,"",@progbits